| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/09/09 06:38 | flow | patch-triage |
1mArgs:null Results: {
"EnableConfigs": [
"XFRM",
"XFRM_ALGO",
"XFRM_USER",
"CRYPTO_ARIA",
"CRYPTO_CBC",
"CRYPTO_CTR",
"INET_ESP"
],
"FocusSymbols": [
"xfrm_ealg_get_byname",
"xfrm_find_algo",
"xfrm_probe_algs",
"attach_crypt"
],
"KMSANReasoning": "The patch merely registers two existing cipher suites (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") into the static `ealg_list` table in `net/xfrm/xfrm_algo.c` to enable their use in XFRM/IPsec.\n\n1. Uninitialized Memory \u0026 Info-leak Analysis:\n- The added entries are static `struct xfrm_algo_desc` definitions in `.data` / `.rodata` where unspecified fields are zero-initialized by the compiler.\n- No dynamic memory allocation, stack variable handling, structure padding exposure, or netlink / `copy_to_user` data transfers are introduced or modified.\n- No control flow or bounds checking logic is changed that could cause reads of uninitialized memory.\n\n2. KASAN vs KMSAN applicability:\n- Any memory safety issues related to cipher contexts, skcipher crypto operations, or XFRM packet processing (out-of-bounds access, buffer overruns, use-after-free) are detectable by standard KASAN.\n- There are no KMSAN-specific uninitialized memory risks that justify a dedicated KMSAN fuzzing session.",
"NeedsKMSAN": false,
"Reasoning": "The patch adds ARIA cipher algorithms (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") to the XFRM encryption algorithm registry (ealg_list). This enables user-space via XFRM Netlink interface to configure IPsec SAs with ARIA encryption, exercising the crypto subsystem and XFRM packet processing paths.",
"WorthFuzzing": true
} |
| 1/1 | 2026/09/09 06:38 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit 3a53d6ecde258cac0044b5e9f0e926dc033592e5\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Sep 9 06:38:50 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c\nindex 70434495f23f5..16c70dc1a4268 100644\n--- a/net/xfrm/xfrm_algo.c\n+++ b/net/xfrm/xfrm_algo.c\n@@ -512,6 +512,34 @@ static struct xfrm_algo_desc ealg_list[] = {\n \t\t.sadb_alg_maxbits = 256\n \t}\n },\n+{\n+\t.name = \"cbc(aria)\",\n+\t.compat = \"aria\",\n+\n+\t.uinfo = {\n+\t\t.encr = {\n+\t\t\t.geniv = \"echainiv\",\n+\t\t\t.blockbits = 128,\n+\t\t\t.defkeybits = 256,\n+\t\t}\n+\t},\n+\n+\t.pfkey_supported = 0,\n+},\n+{\n+\t.name = \"rfc3686(ctr(aria))\",\n+\t.compat = \"aria\",\n+\n+\t.uinfo = {\n+\t\t.encr = {\n+\t\t\t.geniv = \"seqiv\",\n+\t\t\t.blockbits = 128,\n+\t\t\t.defkeybits = 160,\n+\t\t}\n+\t},\n+\n+\t.pfkey_supported = 0,\n+},\n {\n \t.name = \"cbc(twofish)\",\n \t.compat = \"twofish\",\n"
} |
| 2/1 | 2026/09/09 06:38 | agent | patch-evaluator |
1mModel:core Args: null Results: {
"EnableConfigs": [
"XFRM",
"XFRM_ALGO",
"XFRM_USER",
"CRYPTO_ARIA",
"CRYPTO_CBC",
"CRYPTO_CTR",
"INET_ESP"
],
"FocusSymbols": [
"xfrm_ealg_get_byname",
"xfrm_find_algo",
"xfrm_probe_algs",
"attach_crypt"
],
"Reasoning": "The patch adds ARIA cipher algorithms (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") to the XFRM encryption algorithm registry (ealg_list). This enables user-space via XFRM Netlink interface to configure IPsec SAs with ARIA encryption, exercising the crypto subsystem and XFRM packet processing paths.",
"WorthFuzzing": true
}Instruction: You are an expert Linux kernel maintainer and security engineer.
Your job is to review a provided patch series and evaluate whether it warrants fuzzing with syzkaller.
IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on internal assumptions. You must actively use your code access
tools to inspect the actual source code, callers, and surrounding context.
================================================================================
1. CORE TRIAGE PHILOSOPHY
================================================================================
The goal of patch fuzzing is to discover crashes, regressions, exposed latent bugs,
and newly triggered assertions introduced by the patch series.
- REACHABILITY IS THE PRIMARY GATE:
Fuzzing can only discover bugs in code that can actually execute in standard virtualized
environments (GCE or QEMU, utilizing software-emulated devices like USB gadgets, netdev, tun/tap).
If the modified code is structurally unreachable (see Section 2), it MUST NOT be fuzzed,
regardless of whether it adds assertions or complex logic.
- DO NOT BLINDLY TRUST "NO FUNCTIONAL CHANGE" (NFCI) OR "REFACTORING" CLAIMS:
Patch authors routinely label changes as "cleanups", "refactorings", or state
"No functional change intended". Do NOT take these claims at face value.
Code refactorings that rearrange logic, introduce helper functions, or alter state management
in core subsystems frequently introduce subtle semantic shifts or uncover latent kernel bugs.
If reachable executable code is modified or refactored, it MUST be fuzzed.
- NEW OR MODIFIED ASSERTIONS IN REACHABLE CODE MUST BE FUZZED:
When a patch introduces or modifies runtime checks or assertions (e.g., WARN_ON*, VM_WARN_ON*,
BUG_ON*, lockdep_assert*) in reachable code paths, it enforces new or stricter invariants.
Even if the author believes the invariant always holds, fuzzing is essential to verify whether
an unusual sequence of operations can violate it.
================================================================================
2. WHEN TO RETURN WorthFuzzing=false (NEGATIVE CRITERIA)
================================================================================
Return WorthFuzzing=false ONLY IF all modified code falls strictly into one or more of these categories:
- Non-kernel and non-executable changes:
* Modifications to Documentation/, comments, or spelling fixes.
* User-space directories, self-tests, samples, or scripts (e.g., tools/, samples/, scripts/, usr/)
that do not affect the compiled kernel image (vmlinux) or kernel modules.
* Purely decorative logging (e.g., message strings in pr_err, printk, dev_info) or tracepoints
that do not alter control flow or data structures.
* Build system or Kconfig changes that do not alter compiled C logic.
- Structurally unreachable hardware:
* Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, qed,
ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU.
- Unreachable execution paths:
* Driver teardown callbacks (.remove, .shutdown, pci_unregister_driver) executed only during
physical PCI hot-unplug or manual sysfs driver unbinding.
* Code paths exclusive to architectures other than the target architecture.
================================================================================
3. WHEN TO RETURN WorthFuzzing=true (POSITIVE CRITERIA)
================================================================================
Return WorthFuzzing=true whenever the patch touches reachable executable code, including:
- Core Subsystems:
* Any logic modifications in memory management (mm/), synchronization/locking (kernel/locking/),
BPF, scheduler, core networking, VFS, or syscall handling.
- Refactorings and Code Cleanups:
* Any restructuring of reachable data structures, helper abstractions, or algorithm flows.
- Runtime Assertions and Defensive Checks:
* Any introduction or alteration of assertions (WARN_ON*, VM_WARN_ON*, BUG_ON*, etc.) in reachable paths.
- Reachable Drivers and Protocols:
* Drivers accessible via virtual buses (virtio, USB gadget, loopback, netlink, binder, sockets, etc.).
================================================================================
4. EXTRACTING FocusSymbols (PREVENTING DILUTION)
================================================================================
When WorthFuzzing=true, you must extract specific kernel functions into FocusSymbols to guide the fuzzer:
- AVOID UBIQUITOUS LIFECYCLE HOT-PATHS:
Do NOT list generic, ubiquitous functions called by almost every program in the corpus
(including, but not limited to: general memory allocators and deallocators, page fault
and trap handlers, or core synchronization primitives; this is not an exhaustive list).
Listing ubiquitous functions causes the fuzzer to classify thousands of unrelated tests as "focused",
which severely dilutes fuzzing effort away from the actual changes.
- TARGET SPECIFIC FEATURE LOGIC AND ENTRYPOINTS:
List functions that specifically implement the logic being added or altered, or direct API entrypoints
for the subsystem feature under review.
- HANDLING STATIC INLINE FUNCTIONS IN HEADERS (.h):
Compiler-inlined static functions (such as static inlines in mm/*.h or include/linux/*.h) lack
distinct symbol addresses in vmlinux and cannot be targeted directly by symbol coverage filters.
If the changes are primarily in static inline helpers, identify non-static, feature-specific caller
functions in .c files that exercise them (avoiding ubiquitous lifecycle wrappers).
================================================================================
5. IDENTIFYING EnableConfigs
================================================================================
Identify any specific CONFIG_ options required to properly compile and reach the modified code:
- Inspect Kconfig files and #ifdef guards; do not make assumptions.
- Check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed.
- Strip any 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4").
Prefer calling several tools at the same time to save round-trips.
Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.
Prompt: Target architecture: amd64
For your convenience, here is the diff of the changes:
commit 3a53d6ecde258cac0044b5e9f0e926dc033592e5
Author: syz-cluster <triage@syzkaller.com>
Date: Wed Sep 9 06:38:50 2026 +0000
syz-cluster: applied patch under review
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 70434495f23f5..16c70dc1a4268 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -512,6 +512,34 @@ static struct xfrm_algo_desc ealg_list[] = {
.sadb_alg_maxbits = 256
}
},
+{
+ .name = "cbc(aria)",
+ .compat = "aria",
+
+ .uinfo = {
+ .encr = {
+ .geniv = "echainiv",
+ .blockbits = 128,
+ .defkeybits = 256,
+ }
+ },
+
+ .pfkey_supported = 0,
+},
+{
+ .name = "rfc3686(ctr(aria))",
+ .compat = "aria",
+
+ .uinfo = {
+ .encr = {
+ .geniv = "seqiv",
+ .blockbits = 128,
+ .defkeybits = 160,
+ }
+ },
+
+ .pfkey_supported = 0,
+},
{
.name = "cbc(twofish)",
.compat = "twofish",
|
| 3/2 | 2026/09/09 06:38 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 3041 output: 29 thoughts: 94 Thoughts: **Analyzing the Algorithm Patch** Okay, let's dive into this diff. First, I need to get a clear picture of what's being introduced to the codebase. The patch is adding "cbc(aria)" and "rfc3686(ctr(aria))" to the `ealg_list` in `net/xfrm/xfrm_algo.c`. Right away, my brain starts to churn, thinking about the implications. Now, where does this `ealg_list` reside in the grand scheme of things? I need to understand how it's utilized and what other configurations or functions interact with it. So, I'm thinking a quick search for `ealg_list` is definitely in order. I'll need to know the surrounding context to truly assess the impact and any potential issues or conflicts. I'll probably reach for a grepper, or maybe a quick `read-file` in the kernel source, depending on what I feel like at the moment, to get that context. |
| 4/2 | 2026/09/09 06:39 | tool | grepper |
0mArgs:{
"Expression": "ealg_list",
"PathPrefix": "net/xfrm/"
}Results: {
"Output": "net/xfrm/xfrm_algo.c=175=static struct xfrm_algo_desc aalg_list[] = {\n--\nnet/xfrm/xfrm_algo.c-346-\nnet/xfrm/xfrm_algo.c:347:static struct xfrm_algo_desc ealg_list[] = {\nnet/xfrm/xfrm_algo.c-348-{\n--\nnet/xfrm/xfrm_algo.c=645=static inline int ealg_entries(void)\nnet/xfrm/xfrm_algo.c-646-{\nnet/xfrm/xfrm_algo.c:647:\treturn ARRAY_SIZE(ealg_list);\nnet/xfrm/xfrm_algo.c-648-}\n--\nnet/xfrm/xfrm_algo.c=667=static const struct xfrm_algo_list xfrm_aalg_list = {\n--\nnet/xfrm/xfrm_algo.c-672-\nnet/xfrm/xfrm_algo.c:673:static const struct xfrm_algo_list xfrm_ealg_list = {\nnet/xfrm/xfrm_algo.c-674-\t.find = crypto_has_skcipher,\nnet/xfrm/xfrm_algo.c:675:\t.algs = ealg_list,\nnet/xfrm/xfrm_algo.c:676:\t.entries = ARRAY_SIZE(ealg_list),\nnet/xfrm/xfrm_algo.c-677-};\n--\nnet/xfrm/xfrm_algo.c=726=struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id)\nnet/xfrm/xfrm_algo.c-727-{\nnet/xfrm/xfrm_algo.c:728:\treturn xfrm_find_algo(\u0026xfrm_ealg_list, xfrm_alg_id_match,\nnet/xfrm/xfrm_algo.c-729-\t\t\t (void *)(unsigned long)alg_id, 1);\n--\nnet/xfrm/xfrm_algo.c=756=struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe)\nnet/xfrm/xfrm_algo.c-757-{\nnet/xfrm/xfrm_algo.c:758:\treturn xfrm_find_algo(\u0026xfrm_ealg_list, xfrm_alg_name_match, name,\nnet/xfrm/xfrm_algo.c-759-\t\t\t probe);\n--\nnet/xfrm/xfrm_algo.c=806=struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx)\n--\nnet/xfrm/xfrm_algo.c-810-\nnet/xfrm/xfrm_algo.c:811:\treturn \u0026ealg_list[idx];\nnet/xfrm/xfrm_algo.c-812-}\n--\nnet/xfrm/xfrm_algo.c=820=void xfrm_probe_algs(void)\n--\nnet/xfrm/xfrm_algo.c-832-\tfor (i = 0; i \u003c ealg_entries(); i++) {\nnet/xfrm/xfrm_algo.c:833:\t\tstatus = crypto_has_skcipher(ealg_list[i].name, 0, 0);\nnet/xfrm/xfrm_algo.c:834:\t\tif (ealg_list[i].available != status)\nnet/xfrm/xfrm_algo.c:835:\t\t\tealg_list[i].available = status;\nnet/xfrm/xfrm_algo.c-836-\t}\n--\nnet/xfrm/xfrm_algo.c=857=int xfrm_count_pfkey_enc_supported(void)\n--\nnet/xfrm/xfrm_algo.c-861-\tfor (i = 0, n = 0; i \u003c ealg_entries(); i++)\nnet/xfrm/xfrm_algo.c:862:\t\tif (ealg_list[i].available \u0026\u0026 ealg_list[i].pfkey_supported)\nnet/xfrm/xfrm_algo.c-863-\t\t\tn++;\n"
} |
| 5/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 4467 output: 39 thoughts: 47 Thoughts: Here's my take on those lines of thinking, as if they were my own: **Diving into the XFRM Algorithm Landscape** Alright, let's get down to brass tacks. I need a deeper understanding of how these XFRM algorithms are being handled. Specifically, I'm thinking I should start digging into `net/xfrm/xfrm_algo.c` – that's usually a good place to start for this kind of low-level cipher stuff. I'm focusing on lines 500-550; I have a hunch that within that range I'll find some critical initialization or handling logic that'll illuminate how these algorithms are integrated. It's time to parse the details of the code! Beyond the code, I need to know the bigger picture. I should also check the relevant Kconfig options. I want to see which configurations are influencing the availability and behavior of XFRM and, specifically, the ARIA cipher. That will likely point towards build-time decisions that impact the functionality or dependencies of XFRM. |
| 6/2 | 2026/09/09 06:39 | tool | read-file |
0mArgs:{
"File": "net/xfrm/xfrm_algo.c",
"FirstLine": 500,
"LineCount": 50
}Results: {
"Contents": " 500:\t\t\t\t.geniv = \"echainiv\",\n 501:\t\t\t\t.blockbits = 128,\n 502:\t\t\t\t.defkeybits = 128,\n 503:\t\t\t}\n 504:\t\t},\n 505:\t\n 506:\t\t.pfkey_supported = 1,\n 507:\t\n 508:\t\t.desc = {\n 509:\t\t\t.sadb_alg_id = SADB_X_EALG_CAMELLIACBC,\n 510:\t\t\t.sadb_alg_ivlen = 8,\n 511:\t\t\t.sadb_alg_minbits = 128,\n 512:\t\t\t.sadb_alg_maxbits = 256\n 513:\t\t}\n 514:\t},\n 515:\t{\n 516:\t\t.name = \"cbc(aria)\",\n 517:\t\t.compat = \"aria\",\n 518:\t\n 519:\t\t.uinfo = {\n 520:\t\t\t.encr = {\n 521:\t\t\t\t.geniv = \"echainiv\",\n 522:\t\t\t\t.blockbits = 128,\n 523:\t\t\t\t.defkeybits = 256,\n 524:\t\t\t}\n 525:\t\t},\n 526:\t\n 527:\t\t.pfkey_supported = 0,\n 528:\t},\n 529:\t{\n 530:\t\t.name = \"rfc3686(ctr(aria))\",\n 531:\t\t.compat = \"aria\",\n 532:\t\n 533:\t\t.uinfo = {\n 534:\t\t\t.encr = {\n 535:\t\t\t\t.geniv = \"seqiv\",\n 536:\t\t\t\t.blockbits = 128,\n 537:\t\t\t\t.defkeybits = 160,\n 538:\t\t\t}\n 539:\t\t},\n 540:\t\n 541:\t\t.pfkey_supported = 0,\n 542:\t},\n 543:\t{\n 544:\t\t.name = \"cbc(twofish)\",\n 545:\t\t.compat = \"twofish\",\n 546:\t\n 547:\t\t.uinfo = {\n 548:\t\t\t.encr = {\n 549:\t\t\t\t.geniv = \"echainiv\",\n"
} |
| 7/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 5421 output: 32 thoughts: 58 Thoughts: Here's my analysis of what I'm looking into, from a kernel-level XFRM encryption perspective: **Diving Deep into the XFRM Encryption Algorithm Usage** Okay, so I need to understand how the `xfrm_ealg_get_byname` function is being utilized within the kernel's XFRM (IPsec) subsystem. Specifically, I'm trying to trace the lifecycle of encryption algorithms. I'm thinking, "Where is this function called, and what is its role?" I'll need to follow the connections, and the call sites. The critical thing I need to understand is how these encryption algorithms are integrated, at a low level. I see that XFRM uses *xfrm states*, and I'll need to analyze them in depth. I'm going to look at the interaction with netlink messages, specifically `XFRM_MSG_NEWSA`, as this is a key area for adding and configuring security associations. That's a strong lead for where an encryption algorithm would be selected. Then, I need to know how the state is constructed. The `xfrm_state_construct` function is another point of interest here. Finally, I'm thinking about the ESP (Encapsulating Security Payload) protocol. I need to figure out how the encryption algorithms selected are specifically used within the ESP implementation, since that's where the actual data gets encrypted and decrypted. I need to trace this from instantiation to use, to complete the picture. This should give me the full picture. |
| 8/2 | 2026/09/09 06:39 | tool | grepper |
0mArgs:{
"Expression": "xfrm_ealg_get_byname",
"PathPrefix": "net/"
}Results: {
"Output": "net/key/af_key.c=776=static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,\n--\nnet/key/af_key.c-876-\tif (x-\u003eealg) {\nnet/key/af_key.c:877:\t\tstruct xfrm_algo_desc *a = xfrm_ealg_get_byname(x-\u003eealg-\u003ealg_name, 0);\nnet/key/af_key.c-878-\t\tsa-\u003esadb_sa_encrypt = (a \u0026\u0026 a-\u003epfkey_supported) ?\n--\nnet/xfrm/xfrm_algo.c=754=EXPORT_SYMBOL_GPL(xfrm_aalg_get_byname);\nnet/xfrm/xfrm_algo.c-755-\nnet/xfrm/xfrm_algo.c:756:struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe)\nnet/xfrm/xfrm_algo.c-757-{\n--\nnet/xfrm/xfrm_algo.c-760-}\nnet/xfrm/xfrm_algo.c:761:EXPORT_SYMBOL_GPL(xfrm_ealg_get_byname);\nnet/xfrm/xfrm_algo.c-762-\n--\nnet/xfrm/xfrm_user.c=625=static int attach_crypt(struct xfrm_state *x, struct nlattr *rta,\n--\nnet/xfrm/xfrm_user.c-635-\nnet/xfrm/xfrm_user.c:636:\talgo = xfrm_ealg_get_byname(ualg-\u003ealg_name, 1);\nnet/xfrm/xfrm_user.c-637-\tif (!algo) {\n"
} |
| 9/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 6306 output: 28 thoughts: 83 Thoughts: **Analyzing Aria Encryption in XFRM** Okay, so I'm digging into how Aria encryption is handled within the XFRM framework, specifically looking at `net/xfrm/xfrm_user.c`. I see `attach_crypt` in that file, and it's calling `xfrm_ealg_get_byname`. My mental roadmap now is to follow the execution path when a Security Association (SA) is created using either `cbc(aria)` or `rfc3686(ctr(aria))`. I need to understand exactly how the system sets this up. So, I need to check how `attach_crypt` behaves under those scenarios, and then I'll trace through to see what happens in related functions like `esp_init_state`, and any other crucial initialization routines. This should give me a solid picture of the lifecycle of an Aria-based SA within XFRM. |
| 10/2 | 2026/09/09 06:39 | tool | grepper |
0mArgs:{
"Expression": "attach_crypt",
"PathPrefix": "net/xfrm/"
}Results: {
"Output": "net/xfrm/xfrm_user.c=597=static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,\n--\nnet/xfrm/xfrm_user.c-624-\nnet/xfrm/xfrm_user.c:625:static int attach_crypt(struct xfrm_state *x, struct nlattr *rta,\nnet/xfrm/xfrm_user.c-626-\t\t\tstruct netlink_ext_ack *extack)\n--\nnet/xfrm/xfrm_user.c=907=static struct xfrm_state *xfrm_state_construct(struct net *net,\n--\nnet/xfrm/xfrm_user.c-947-\t}\nnet/xfrm/xfrm_user.c:948:\tif ((err = attach_crypt(x, attrs[XFRMA_ALG_CRYPT], extack)))\nnet/xfrm/xfrm_user.c-949-\t\tgoto error;\n"
} |
| 11/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 6867 output: 39 thoughts: 23 Thoughts: Here's my thought process, as if I were considering this code: **Diving into `xfrm_user.c` to Analyze `attach_crypt`** Okay, so I need to understand how crypto modules are being attached within the XFRM framework, and `attach_crypt` in `net/xfrm/xfrm_user.c` seems like the obvious place to start. Given the name, I'm guessing this function is responsible for linking a cryptographic algorithm to a security policy or a transform. Let's dig in and make sure I'm right. I'm assuming that it is the case, but let's confirm the usage and implications. I need to refresh my memory on the interactions of user-space configurations with kernel-space transformations. |
| 12/2 | 2026/09/09 06:39 | tool | read-file |
0mArgs:{
"File": "net/xfrm/xfrm_user.c",
"FirstLine": 620,
"LineCount": 50
}Results: {
"Contents": " 620:\t\tstrscpy(p-\u003ealg_name, algo-\u003ename);\n 621:\t\t*algpp = p;\n 622:\t\treturn 0;\n 623:\t}\n 624:\t\n 625:\tstatic int attach_crypt(struct xfrm_state *x, struct nlattr *rta,\n 626:\t\t\t\tstruct netlink_ext_ack *extack)\n 627:\t{\n 628:\t\tstruct xfrm_algo *p, *ualg;\n 629:\t\tstruct xfrm_algo_desc *algo;\n 630:\t\n 631:\t\tif (!rta)\n 632:\t\t\treturn 0;\n 633:\t\n 634:\t\tualg = nla_data(rta);\n 635:\t\n 636:\t\talgo = xfrm_ealg_get_byname(ualg-\u003ealg_name, 1);\n 637:\t\tif (!algo) {\n 638:\t\t\tNL_SET_ERR_MSG(extack, \"Requested CRYPT algorithm not found\");\n 639:\t\t\treturn -ENOSYS;\n 640:\t\t}\n 641:\t\tx-\u003eprops.ealgo = algo-\u003edesc.sadb_alg_id;\n 642:\t\n 643:\t\tp = kmemdup(ualg, xfrm_alg_len(ualg), GFP_KERNEL);\n 644:\t\tif (!p)\n 645:\t\t\treturn -ENOMEM;\n 646:\t\n 647:\t\tstrscpy(p-\u003ealg_name, algo-\u003ename);\n 648:\t\tx-\u003eealg = p;\n 649:\t\tx-\u003egeniv = algo-\u003euinfo.encr.geniv;\n 650:\t\treturn 0;\n 651:\t}\n 652:\t\n 653:\tstatic int attach_auth(struct xfrm_algo_auth **algpp, u8 *props,\n 654:\t\t\t struct nlattr *rta, struct netlink_ext_ack *extack)\n 655:\t{\n 656:\t\tstruct xfrm_algo *ualg;\n 657:\t\tstruct xfrm_algo_auth *p;\n 658:\t\tstruct xfrm_algo_desc *algo;\n 659:\t\n 660:\t\tif (!rta)\n 661:\t\t\treturn 0;\n 662:\t\n 663:\t\tualg = nla_data(rta);\n 664:\t\n 665:\t\talgo = xfrm_aalg_get_byname(ualg-\u003ealg_name, 1);\n 666:\t\tif (!algo) {\n 667:\t\t\tNL_SET_ERR_MSG(extack, \"Requested AUTH algorithm not found\");\n 668:\t\t\treturn -ENOSYS;\n 669:\t\t}\n"
} |
| 13/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 7841 output: 18 thoughts: 32 Thoughts: Here's my thought process, as if I were considering this issue: **Delving into ARIA Cipher Configuration** Okay, so I need to figure out how the ARIA cipher is configured in this kernel build. Given my familiarity with the kernel structure, I'm going to start with the Kconfig files. That's the logical place to check for compile-time options and dependencies. I'll need to look for any references to "ARIA" within the `crypto/` directory, naturally, but also, given its use in network security, I should probably also explore the `net/xfrm/` directory. There might be some ARIA-related configurations hiding in there, especially if it's employed for IPsec or similar protocols. I'll do a quick search within those directories and see what the Kconfig files reveal. Let's see if this configuration is statically compiled, modularized, or perhaps conditionally enabled based on other settings. Understanding the configuration options is key before diving deeper into the code. |
| 14/2 | 2026/09/09 06:39 | tool | grepper |
0mArgs:{
"Expression": "CRYPTO_ARIA"
}Results: {
"Output": "arch/m68k/configs/amiga_defconfig=516=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/amiga_defconfig:517:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/amiga_defconfig-518-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/apollo_defconfig=471=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/apollo_defconfig:472:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/apollo_defconfig-473-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/atari_defconfig=494=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/atari_defconfig:495:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/atari_defconfig-496-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/bvme6000_defconfig=463=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/bvme6000_defconfig:464:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/bvme6000_defconfig-465-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/hp300_defconfig=473=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/hp300_defconfig:474:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/hp300_defconfig-475-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/mac_defconfig=492=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/mac_defconfig:493:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/mac_defconfig-494-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/multi_defconfig=579=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/multi_defconfig:580:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/multi_defconfig-581-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/mvme147_defconfig=463=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/mvme147_defconfig:464:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/mvme147_defconfig-465-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/mvme16x_defconfig=464=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/mvme16x_defconfig:465:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/mvme16x_defconfig-466-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/q40_defconfig=482=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/q40_defconfig:483:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/q40_defconfig-484-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/sun3_defconfig=461=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/sun3_defconfig:462:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/sun3_defconfig-463-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/m68k/configs/sun3x_defconfig=461=CONFIG_CRYPTO_ANUBIS=m\narch/m68k/configs/sun3x_defconfig:462:CONFIG_CRYPTO_ARIA=m\narch/m68k/configs/sun3x_defconfig-463-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/s390/configs/debug_defconfig=778=CONFIG_CRYPTO_ANUBIS=m\narch/s390/configs/debug_defconfig:779:CONFIG_CRYPTO_ARIA=m\narch/s390/configs/debug_defconfig-780-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/s390/configs/defconfig=762=CONFIG_CRYPTO_ANUBIS=m\narch/s390/configs/defconfig:763:CONFIG_CRYPTO_ARIA=m\narch/s390/configs/defconfig-764-CONFIG_CRYPTO_BLOWFISH=m\n--\narch/x86/crypto/Kconfig=239=config CRYPTO_TWOFISH_AVX_X86_64\n--\narch/x86/crypto/Kconfig-255-\narch/x86/crypto/Kconfig:256:config CRYPTO_ARIA_AESNI_AVX_X86_64\narch/x86/crypto/Kconfig-257-\ttristate \"Ciphers: ARIA with modes: ECB, CTR (AES-NI/AVX/GFNI)\"\n--\narch/x86/crypto/Kconfig-260-\tselect CRYPTO_ALGAPI\narch/x86/crypto/Kconfig:261:\tselect CRYPTO_ARIA\narch/x86/crypto/Kconfig-262-\thelp\n--\narch/x86/crypto/Kconfig-272-\narch/x86/crypto/Kconfig:273:config CRYPTO_ARIA_AESNI_AVX2_X86_64\narch/x86/crypto/Kconfig-274-\ttristate \"Ciphers: ARIA with modes: ECB, CTR (AES-NI/AVX2/GFNI)\"\n--\narch/x86/crypto/Kconfig-277-\tselect CRYPTO_ALGAPI\narch/x86/crypto/Kconfig:278:\tselect CRYPTO_ARIA\narch/x86/crypto/Kconfig:279:\tselect CRYPTO_ARIA_AESNI_AVX_X86_64\narch/x86/crypto/Kconfig-280-\thelp\n--\narch/x86/crypto/Kconfig-290-\narch/x86/crypto/Kconfig:291:config CRYPTO_ARIA_GFNI_AVX512_X86_64\narch/x86/crypto/Kconfig-292-\ttristate \"Ciphers: ARIA with modes: ECB, CTR (AVX512/GFNI)\"\n--\narch/x86/crypto/Kconfig-295-\tselect CRYPTO_ALGAPI\narch/x86/crypto/Kconfig:296:\tselect CRYPTO_ARIA\narch/x86/crypto/Kconfig:297:\tselect CRYPTO_ARIA_AESNI_AVX_X86_64\narch/x86/crypto/Kconfig:298:\tselect CRYPTO_ARIA_AESNI_AVX2_X86_64\narch/x86/crypto/Kconfig-299-\thelp\n--\narch/x86/crypto/Makefile=54=sm4-aesni-avx2-x86_64-y := sm4-aesni-avx2-asm_64.o sm4_aesni_avx2_glue.o\narch/x86/crypto/Makefile-55-\narch/x86/crypto/Makefile:56:obj-$(CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64) += aria-aesni-avx-x86_64.o\narch/x86/crypto/Makefile-57-aria-aesni-avx-x86_64-y := aria-aesni-avx-asm_64.o aria_aesni_avx_glue.o\narch/x86/crypto/Makefile-58-\narch/x86/crypto/Makefile:59:obj-$(CONFIG_CRYPTO_ARIA_AESNI_AVX2_X86_64) += aria-aesni-avx2-x86_64.o\narch/x86/crypto/Makefile-60-aria-aesni-avx2-x86_64-y := aria-aesni-avx2-asm_64.o aria_aesni_avx2_glue.o\narch/x86/crypto/Makefile-61-\narch/x86/crypto/Makefile:62:obj-$(CONFIG_CRYPTO_ARIA_GFNI_AVX512_X86_64) += aria-gfni-avx512-x86_64.o\narch/x86/crypto/Makefile-63-aria-gfni-avx512-x86_64-y := aria-gfni-avx512-asm_64.o aria_gfni_avx512_glue.o\n--\narch/x86/kernel/asm-offsets.c=34=static void __used common(void)\n--\narch/x86/kernel/asm-offsets.c-124-\tOFFSET(TSS_sp2, tss_struct, x86_tss.sp2);\narch/x86/kernel/asm-offsets.c:125:#if IS_ENABLED(CONFIG_CRYPTO_ARIA_AESNI_AVX_X86_64)\narch/x86/kernel/asm-offsets.c-126-\t/* Offset for fields in aria_ctx */\n--\ncrypto/Kconfig=388=config CRYPTO_ANUBIS\n--\ncrypto/Kconfig-401-\ncrypto/Kconfig:402:config CRYPTO_ARIA\ncrypto/Kconfig-403-\ttristate \"ARIA\"\n--\ncrypto/Makefile=143=obj-$(CONFIG_CRYPTO_SEED) += seed.o\ncrypto/Makefile:144:obj-$(CONFIG_CRYPTO_ARIA) += aria_generic.o\ncrypto/Makefile-145-obj-$(CONFIG_CRYPTO_CHACHA20) += chacha.o\n--\ninclude/crypto/aria.h-17-\ninclude/crypto/aria.h:18:#ifndef _CRYPTO_ARIA_H\ninclude/crypto/aria.h:19:#define _CRYPTO_ARIA_H\ninclude/crypto/aria.h-20-\n--\ntools/testing/selftests/net/config=9=CONFIG_CAN_VXCAN=m\ntools/testing/selftests/net/config:10:CONFIG_CRYPTO_ARIA=y\ntools/testing/selftests/net/config-11-CONFIG_CRYPTO_CHACHA20POLY1305=m\n"
} |
| 15/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 10909 output: 32 thoughts: 24 Thoughts: Here's my thought process, as if I were considering this: **Investigating Kconfig Dependencies** Okay, so I need to track down the configuration dependencies for a couple of areas in the kernel. Specifically, I'm thinking about `crypto/Kconfig:402` – that's likely a specific configuration option or section within the cryptographic subsystem – and also the `net/xfrm/Kconfig` file. I'm probably looking to understand what triggers the build or inclusion of certain cryptography features and how the XFRM (IPsec framework) configuration relates to them. Is there a dependency chain? Do specific crypto algorithms need to be enabled for certain XFRM features to function? I need to analyze those Kconfig entries, potentially checking for dependencies on other options, and maybe even cross-referencing them. Ultimately, I need to know how these are linked for configuration purposes. I'm hoping to quickly identify any potential conflicts or areas where my assumptions might be off. |
| 16/2 | 2026/09/09 06:39 | tool | read-file |
0mArgs:{
"File": "crypto/Kconfig",
"FirstLine": 400,
"LineCount": 25
}Results: {
"Contents": " 400:\t\t for further information.\n 401:\t\n 402:\tconfig CRYPTO_ARIA\n 403:\t\ttristate \"ARIA\"\n 404:\t\tselect CRYPTO_ALGAPI\n 405:\t\thelp\n 406:\t\t ARIA cipher algorithm (RFC5794)\n 407:\t\n 408:\t\t ARIA is a standard encryption algorithm of the Republic of Korea.\n 409:\t\t The ARIA specifies three key sizes and rounds.\n 410:\t\t 128-bit: 12 rounds.\n 411:\t\t 192-bit: 14 rounds.\n 412:\t\t 256-bit: 16 rounds.\n 413:\t\n 414:\t\t See:\n 415:\t\t https://seed.kisa.or.kr/kisa/algorithm/EgovAriaInfo.do\n 416:\t\n 417:\tconfig CRYPTO_BLOWFISH\n 418:\t\ttristate \"Blowfish\"\n 419:\t\tselect CRYPTO_ALGAPI\n 420:\t\tselect CRYPTO_BLOWFISH_COMMON\n 421:\t\thelp\n 422:\t\t Blowfish cipher algorithm, by Bruce Schneier\n 423:\t\n 424:\t\t This is a variable key length cipher which can use keys from 32\n"
} |
| 17/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 11536 output: 33 thoughts: 22 Thoughts: Here's my take on those thoughts: **XFRM Configuration Deep Dive** Okay, time to get to the heart of this. My initial instinct, given whatever problem I'm facing, is to dive straight into the XFRM configuration. I need to understand how the components are being assembled and what options are available. The `net/xfrm/Kconfig` file is going to be my primary resource for that. It holds the key to the build-time configuration options, dependencies, and all the "if this, then that" logic that dictates which XFRM features are actually compiled into the kernel. It’ll give me the knobs and dials. Then, I'll move on to `net/xfrm/Makefile`, naturally. I need to see how those configuration choices are *actually* translated into build instructions and how the individual XFRM modules and objects are compiled, linked, and organized. That Makefile will show me the build process's dance. With these two, I should have a good picture of the framework. |
| 18/2 | 2026/09/09 06:39 | tool | read-file |
0mArgs:{
"File": "net/xfrm/Kconfig",
"FirstLine": 1,
"LineCount": 50
}Results: {
"Contents": " 1:\t# SPDX-License-Identifier: GPL-2.0-only\n 2:\t#\n 3:\t# XFRM configuration\n 4:\t#\n 5:\tconfig XFRM\n 6:\t\tbool\n 7:\t\tdepends on INET\n 8:\t\tselect GRO_CELLS\n 9:\t\tselect SKB_EXTENSIONS\n 10:\t\n 11:\tconfig XFRM_OFFLOAD\n 12:\t\tbool\n 13:\t\n 14:\tconfig XFRM_ALGO\n 15:\t\ttristate\n 16:\t\tselect XFRM\n 17:\t\tselect CRYPTO\n 18:\t\tselect CRYPTO_AEAD\n 19:\t\tselect CRYPTO_HASH\n 20:\t\tselect CRYPTO_SKCIPHER\n 21:\t\n 22:\tif INET\n 23:\tconfig XFRM_USER\n 24:\t\ttristate \"Transformation user configuration interface\"\n 25:\t\tselect XFRM_ALGO\n 26:\t\thelp\n 27:\t\t Support for Transformation(XFRM) user configuration interface\n 28:\t\t like IPsec used by native Linux tools.\n 29:\t\n 30:\t\t If unsure, say Y.\n 31:\t\n 32:\tconfig XFRM_USER_COMPAT\n 33:\t\ttristate \"Compatible ABI support\"\n 34:\t\tdepends on XFRM_USER \u0026\u0026 COMPAT_FOR_U64_ALIGNMENT \u0026\u0026 \\\n 35:\t\t\tHAVE_EFFICIENT_UNALIGNED_ACCESS\n 36:\t\tselect WANT_COMPAT_NETLINK_MESSAGES\n 37:\t\thelp\n 38:\t\t Transformation(XFRM) user configuration interface like IPsec\n 39:\t\t used by compatible Linux applications.\n 40:\t\n 41:\t\t If unsure, say N.\n 42:\t\n 43:\tconfig XFRM_INTERFACE\n 44:\t\ttristate \"Transformation virtual interface\"\n 45:\t\tdepends on XFRM \u0026\u0026 IPV6\n 46:\t\thelp\n 47:\t\t This provides a virtual interface to route IPsec traffic.\n 48:\t\n 49:\t\t If unsure, say N.\n 50:\t\n"
} |
| 19/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 12385 output: 32 thoughts: 24 Thoughts: Here's my thought process, as if I were considering this Makefile: **Digging into the XFRM Build Process** Okay, I need to understand how `xfrm_algo.o` is constructed within the `net/xfrm` directory. The obvious place to start is the `Makefile` in that location. I need to figure out what rules and dependencies govern its compilation. I'm expecting to find information about the source files involved, any required compiler flags, and any dependencies on other kernel modules or libraries. I'll be looking for common Makefile constructs like `$(obj-m)`, `$(cc)`, `$(KBUILD_CFLAGS)`, and dependency declarations (e.g., `xfrm_algo.o: some_source.c some_header.h`). Ultimately, I want to trace the compilation steps to ensure I grasp how this specific object file fits into the larger XFRM framework. I'll be looking for any hints about module dependencies or linking against other object files. Any special compiler options are also a point of interest, as these might provide clues to the optimization or feature requirements of this particular XFRM algorithm module. |
| 20/2 | 2026/09/09 06:39 | tool | read-file |
0mArgs:{
"File": "net/xfrm/Makefile",
"FirstLine": 1,
"LineCount": 25
}Results: {
"Contents": " 1:\t# SPDX-License-Identifier: GPL-2.0\n 2:\t#\n 3:\t# Makefile for the XFRM subsystem.\n 4:\t#\n 5:\t\n 6:\txfrm_interface-$(CONFIG_XFRM_INTERFACE) += xfrm_interface_core.o\n 7:\t\n 8:\tifeq ($(CONFIG_XFRM_INTERFACE),m)\n 9:\txfrm_interface-$(CONFIG_DEBUG_INFO_BTF_MODULES) += xfrm_interface_bpf.o\n 10:\telse ifeq ($(CONFIG_XFRM_INTERFACE),y)\n 11:\txfrm_interface-$(CONFIG_DEBUG_INFO_BTF) += xfrm_interface_bpf.o\n 12:\tendif\n 13:\t\n 14:\tobj-$(CONFIG_XFRM) := xfrm_policy.o xfrm_state.o xfrm_hash.o \\\n 15:\t\t\t xfrm_input.o xfrm_output.o \\\n 16:\t\t\t xfrm_sysctl.o xfrm_replay.o xfrm_device.o \\\n 17:\t\t\t xfrm_nat_keepalive.o\n 18:\tobj-$(CONFIG_XFRM_STATISTICS) += xfrm_proc.o\n 19:\tobj-$(CONFIG_XFRM_ALGO) += xfrm_algo.o\n 20:\tobj-$(CONFIG_XFRM_USER) += xfrm_user.o\n 21:\tobj-$(CONFIG_XFRM_USER_COMPAT) += xfrm_compat.o\n 22:\tobj-$(CONFIG_XFRM_IPCOMP) += xfrm_ipcomp.o\n 23:\tobj-$(CONFIG_XFRM_INTERFACE) += xfrm_interface.o\n 24:\tobj-$(CONFIG_XFRM_IPTFS) += xfrm_iptfs.o\n 25:\tobj-$(CONFIG_XFRM_ESPINTCP) += espintcp.o\n"
} |
| 21/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 13191 output: 26 thoughts: 454 Thoughts: **My Analysis of IPsec/XFRM and the ARIA Cipher Configuration** Okay, let's break this down. First, I'm seeing a cluster of kernel configuration options: `CONFIG_XFRM_ALGO`, `CONFIG_XFRM_USER`, `CONFIG_CRYPTO_ARIA`, `CONFIG_CRYPTO_CBC`, `CONFIG_CRYPTO_CTR`, `CONFIG_INET_ESP`, etc. These are all pointing toward an IPsec/XFRM setup, specifically involving the ARIA cipher. My focus is what happens when syzkaller, the fuzzer, tries to configure this. Essentially, user space, through syzkaller, is sending netlink messages (`XFRM_MSG_NEWSA`, `XFRM_MSG_UPDSA`, etc.) to the kernel. These messages specify security associations (SAs), and crucially, they include the `XFRMA_ALG_CRYPT` attribute. The fuzzer likely specifies algorithm names like `"cbc(aria)"` or `"rfc3686(ctr(aria))"` or just `"aria"` – that's the interesting part, right? The kernel, in `xfrm_user.c`, uses the `attach_crypt` function to make sense of this. This function then calls `xfrm_ealg_get_byname`, which hunts through `xfrm_ealg_list` looking for a suitable algorithm. This is important: the list *should* now contain entries for `"cbc(aria)"` and `"rfc3686(ctr(aria))"`. If it doesn't, we have a problem. The next critical step is in `esp_init_state`, located in `net/ipv4/esp4.c` or `net/ipv6/esp6.c`. This is where the kernel attempts to allocate the skcipher or crypto transform. It also initializes the IV generator, using `echainiv` or `seqiv`. Finally, the actual processing of network packets happens using ESP (`xfrm4_output`, `xfrm6_output`, `esp_output`, and so on). Now, let's step back and consider the *requirements*. For `cbc(aria)` to be successfully instantiated, the kernel *must* have `CRYPTO_CBC` and `CRYPTO_ARIA` enabled. Similarly, `rfc3686(ctr(aria))` requires `CRYPTO_CTR`, `CRYPTO_SEQIV` or `CRYPTO_ECHAINIV`, and `CRYPTO_ARIA`. Naturally, `XFRM_USER`, `XFRM_ALGO`, and either `INET_ESP` or `INET6_ESP` need to be enabled too. It seems basic, but I'll make sure those are properly configured. To get the full picture, I'll check the Git log for the commit introducing this functionality. The commit message and author's intent are essential for my analysis. I need to understand why this was added, what assumptions were made, and any potential caveats. This should give me a better understanding of the overall design and possible vulnerabilities. |
| 22/2 | 2026/09/09 06:39 | tool | grepper |
0mError:no matches Args: {
"Expression": "ARIA",
"PathPrefix": "net/xfrm/"
}Results: {
"error": "no matches"
} |
| 23/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 14351 output: 31 thoughts: 37 Thoughts: Here's my summary, as if I were thinking these thoughts: **Diving into the Algorithm Lookup** Okay, so I need to understand how the kernel looks up and uses cryptographic algorithms. Let's start by looking at `xfrm_algo.c`. That seems like the logical place to find the implementations for `xfrm_ealg_get_byname` and `xfrm_find_algo`. Those are the key functions; one is likely responsible for retrieving an algorithm by its name, and the other probably handles the broader search process. Understanding their interactions will be crucial to grasping the algorithm selection mechanism within the XFRM subsystem. I'm expecting this file to hold the core logic for how the system handles algorithm registration, lookups, and potentially even caching. Time to get my hands dirty. |
| 24/2 | 2026/09/09 06:39 | tool | grepper |
0mArgs:{
"Expression": "xfrm_find_algo",
"PathPrefix": "net/xfrm/"
}Results: {
"Output": "net/xfrm/xfrm_algo.c=679=static const struct xfrm_algo_list xfrm_calg_list = {\n--\nnet/xfrm/xfrm_algo.c-684-\nnet/xfrm/xfrm_algo.c:685:static struct xfrm_algo_desc *xfrm_find_algo(\nnet/xfrm/xfrm_algo.c-686-\tconst struct xfrm_algo_list *algo_list,\n--\nnet/xfrm/xfrm_algo.c=719=struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id)\nnet/xfrm/xfrm_algo.c-720-{\nnet/xfrm/xfrm_algo.c:721:\treturn xfrm_find_algo(\u0026xfrm_aalg_list, xfrm_alg_id_match,\nnet/xfrm/xfrm_algo.c-722-\t\t\t (void *)(unsigned long)alg_id, 1);\n--\nnet/xfrm/xfrm_algo.c=726=struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id)\nnet/xfrm/xfrm_algo.c-727-{\nnet/xfrm/xfrm_algo.c:728:\treturn xfrm_find_algo(\u0026xfrm_ealg_list, xfrm_alg_id_match,\nnet/xfrm/xfrm_algo.c-729-\t\t\t (void *)(unsigned long)alg_id, 1);\n--\nnet/xfrm/xfrm_algo.c=733=struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id)\nnet/xfrm/xfrm_algo.c-734-{\nnet/xfrm/xfrm_algo.c:735:\treturn xfrm_find_algo(\u0026xfrm_calg_list, xfrm_alg_id_match,\nnet/xfrm/xfrm_algo.c-736-\t\t\t (void *)(unsigned long)alg_id, 1);\n--\nnet/xfrm/xfrm_algo.c=749=struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe)\nnet/xfrm/xfrm_algo.c-750-{\nnet/xfrm/xfrm_algo.c:751:\treturn xfrm_find_algo(\u0026xfrm_aalg_list, xfrm_alg_name_match, name,\nnet/xfrm/xfrm_algo.c-752-\t\t\t probe);\n--\nnet/xfrm/xfrm_algo.c=756=struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe)\nnet/xfrm/xfrm_algo.c-757-{\nnet/xfrm/xfrm_algo.c:758:\treturn xfrm_find_algo(\u0026xfrm_ealg_list, xfrm_alg_name_match, name,\nnet/xfrm/xfrm_algo.c-759-\t\t\t probe);\n--\nnet/xfrm/xfrm_algo.c=763=struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe)\nnet/xfrm/xfrm_algo.c-764-{\nnet/xfrm/xfrm_algo.c:765:\treturn xfrm_find_algo(\u0026xfrm_calg_list, xfrm_alg_name_match, name,\nnet/xfrm/xfrm_algo.c-766-\t\t\t probe);\n--\nnet/xfrm/xfrm_algo.c=785=struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, int probe)\n--\nnet/xfrm/xfrm_algo.c-791-\nnet/xfrm/xfrm_algo.c:792:\treturn xfrm_find_algo(\u0026xfrm_aead_list, xfrm_aead_name_match, \u0026data,\nnet/xfrm/xfrm_algo.c-793-\t\t\t probe);\n"
} |
| 25/2 | 2026/09/09 06:39 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 15650 output: 39 thoughts: 14 Thoughts: Here's my attempt at summarizing the thought process, tailored for an expert audience: **Diving into the `xfrm_find_algo` Implementation** Okay, time to get my hands dirty. I need to take a look at the `xfrm_find_algo` implementation. My initial concern is likely around the efficiency of the search. I want to understand how it's optimized, or *if* it's optimized, and whether it's susceptible to any denial-of-service vectors related to poorly constructed security policies. I'll be looking for things like: how the algorithm tables are organized, the search key used, and how collisions are handled. Is there a caching mechanism? Does it iterate linearly or utilize some form of hashing or a more advanced data structure? I'm also going to check for any potential race conditions if the implementation isn't properly protected by locks. Further, I will look to see if it makes use of any hardware acceleration and if it has any fallbacks. The goal here is to understand the performance characteristics and identify any potential weaknesses that could be exploited in a real-world scenario. |
| 26/2 | 2026/09/09 06:40 | tool | read-file |
0mArgs:{
"File": "net/xfrm/xfrm_algo.c",
"FirstLine": 680,
"LineCount": 50
}Results: {
"Contents": " 680:\t\t.find = crypto_has_acomp,\n 681:\t\t.algs = calg_list,\n 682:\t\t.entries = ARRAY_SIZE(calg_list),\n 683:\t};\n 684:\t\n 685:\tstatic struct xfrm_algo_desc *xfrm_find_algo(\n 686:\t\tconst struct xfrm_algo_list *algo_list,\n 687:\t\tint match(const struct xfrm_algo_desc *entry, const void *data),\n 688:\t\tconst void *data, int probe)\n 689:\t{\n 690:\t\tstruct xfrm_algo_desc *list = algo_list-\u003ealgs;\n 691:\t\tint i, status;\n 692:\t\n 693:\t\tfor (i = 0; i \u003c algo_list-\u003eentries; i++) {\n 694:\t\t\tif (!match(list + i, data))\n 695:\t\t\t\tcontinue;\n 696:\t\n 697:\t\t\tif (list[i].available)\n 698:\t\t\t\treturn \u0026list[i];\n 699:\t\n 700:\t\t\tif (!probe)\n 701:\t\t\t\tbreak;\n 702:\t\n 703:\t\t\tstatus = algo_list-\u003efind(list[i].name, 0, 0);\n 704:\t\t\tif (!status)\n 705:\t\t\t\tbreak;\n 706:\t\n 707:\t\t\tlist[i].available = status;\n 708:\t\t\treturn \u0026list[i];\n 709:\t\t}\n 710:\t\treturn NULL;\n 711:\t}\n 712:\t\n 713:\tstatic int xfrm_alg_id_match(const struct xfrm_algo_desc *entry,\n 714:\t\t\t\t const void *data)\n 715:\t{\n 716:\t\treturn entry-\u003edesc.sadb_alg_id == (unsigned long)data;\n 717:\t}\n 718:\t\n 719:\tstruct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id)\n 720:\t{\n 721:\t\treturn xfrm_find_algo(\u0026xfrm_aalg_list, xfrm_alg_id_match,\n 722:\t\t\t\t (void *)(unsigned long)alg_id, 1);\n 723:\t}\n 724:\tEXPORT_SYMBOL_GPL(xfrm_aalg_get_byid);\n 725:\t\n 726:\tstruct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id)\n 727:\t{\n 728:\t\treturn xfrm_find_algo(\u0026xfrm_ealg_list, xfrm_alg_id_match,\n 729:\t\t\t\t (void *)(unsigned long)alg_id, 1);\n"
} |
| 27/2 | 2026/09/09 06:40 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 16702 output: 27 thoughts: 554 Thoughts: **My Assessment of the New Encryption Algorithm Implementation** Okay, let's break this down systematically. My primary goal here is to determine the fuzzing worthiness of this patch. First, I need to get a handle on the key components and entry points. The patch introduces `cbc(aria)` and `rfc3686(ctr(aria))` encryption algorithms, registering them in `ealg_list`. The functions directly interacting with this registration are `xfrm_ealg_get_byname`, `xfrm_probe_algs`, `attach_crypt`, and `xfrm_state_construct`. I need to broaden my scope beyond those entry points. I'll now expand my investigation. I'll search for all touchpoints related to `xfrm_algo` and ARIA encryption within the XFRM framework. That includes checking `crypto_aria` and, importantly, the optimized x86 variants like `CRYPTO_ARIA_AESNI_AVX_X86_64`, `CRYPTO_ARIA_AESNI_AVX2_X86_64`, and `CRYPTO_ARIA_GFNI_AVX512_X86_64`. I also need to verify that I have correct settings for `CRYPTO_CBC`, `CRYPTO_CTR`, `XFRM`, `XFRM_ALGO`, `XFRM_USER`, `INET_ESP`, and `INET6_ESP`. Now, the crucial question: is this change a good fuzzing target? Let's check: 1. **Reachability:** The code resides in `net/xfrm/xfrm_algo.c`. It is definitely reachable from user space via Netlink, specifically the XFRM netlink API or pfkey, which is heavily leveraged by syzkaller. The presence of `syz_netlink_xfrm*` or socket netlink messages indicates that syzkaller already has excellent coverage. 2. **Functionality:** This patch adds two new cipher algorithms to XFRM, allowing userspace configuration of XFRM states using `cbc(aria)` and `rfc3686(ctr(aria))`, including specific key sizes, IV generators, and block sizes. That's good complexity for fuzzing. 3. **Impact:** This is core networking, specifically IPsec and the cryptographic interface. This is critical infrastructure, and security flaws here are high-impact. 4. **Conclusion:** Based on all these points, this is definitely a "WorthFuzzing=true" situation. I'd need to prioritize this. Finally, I'll carefully verify the required kernel configurations. I'll need `XFRM_ALGO`, `XFRM_USER`, `CRYPTO_ARIA`, `CRYPTO_CBC`, `CRYPTO_CTR`, and either `INET_ESP` (or potentially `INET_ESP_OFFLOAD`) or `INET6_ESP` enabled. I'll also double-check the Kconfig files in `net/ipv4` and `net/ipv6` to ensure the ESP options are correctly set. This will be the first step to fuzzing. |
| 28/2 | 2026/09/09 06:40 | tool | grepper |
0mArgs:{
"Expression": "config INET_ESP",
"PathPrefix": "net/"
}Results: {
"Output": "net/ipv4/Kconfig=339=config INET_AH\n--\nnet/ipv4/Kconfig-353-\nnet/ipv4/Kconfig:354:config INET_ESP\nnet/ipv4/Kconfig-355-\ttristate \"IP: ESP transformation\"\n--\nnet/ipv4/Kconfig-368-\nnet/ipv4/Kconfig:369:config INET_ESP_OFFLOAD\nnet/ipv4/Kconfig-370-\ttristate \"IP: ESP transformation offload\"\n--\nnet/ipv4/Kconfig-381-\nnet/ipv4/Kconfig:382:config INET_ESPINTCP\nnet/ipv4/Kconfig-383-\tbool \"IP: ESP in TCP encapsulation (RFC 8229)\"\n"
} |
| 29/2 | 2026/09/09 06:40 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 18173 output: 35 thoughts: 19 Thoughts: Okay, here's my interpretation of that thought process, from an expert's perspective: **Diving into the Kernel Configuration for IPsec** Right, so I need to figure out the configuration options related to Encapsulating Security Payload (ESP) within the IPv4 stack. That means I'm going to jump straight into the heart of the matter – the `net/ipv4/Kconfig` file. That's the go-to location for kernel configuration options specific to IPv4 networking, and it's almost certain to hold the setting I'm looking for, `INET_ESP`. This is a pretty standard starting point. I could probably guess that's where it is, but it's always best practice to double-check in the config itself. |
| 30/2 | 2026/09/09 06:40 | tool | read-file |
0mArgs:{
"File": "net/ipv4/Kconfig",
"FirstLine": 350,
"LineCount": 25
}Results: {
"Contents": " 350:\t\t implementations of any needed algorithms when available.\n 351:\t\n 352:\t\t If unsure, say Y.\n 353:\t\n 354:\tconfig INET_ESP\n 355:\t\ttristate \"IP: ESP transformation\"\n 356:\t\tselect XFRM_ESP\n 357:\t\thelp\n 358:\t\t Support for IPsec ESP (Encapsulating Security Payload).\n 359:\t\n 360:\t\t ESP can be used with various encryption and authentication algorithms.\n 361:\t\t Besides enabling ESP support itself, this option enables the generic\n 362:\t\t implementations of the algorithms that RFC 8221 lists as MUST be\n 363:\t\t implemented. If you need any other algorithms, you'll need to enable\n 364:\t\t them in the crypto API. You should also enable accelerated\n 365:\t\t implementations of any needed algorithms when available.\n 366:\t\n 367:\t\t If unsure, say Y.\n 368:\t\n 369:\tconfig INET_ESP_OFFLOAD\n 370:\t\ttristate \"IP: ESP transformation offload\"\n 371:\t\tdepends on INET_ESP\n 372:\t\tselect XFRM_OFFLOAD\n 373:\t\tdefault n\n 374:\t\thelp\n"
} |
| 31/2 | 2026/09/09 06:40 | llm | patch-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 18751 output: 191 thoughts: 295 Thoughts: **XFRM Crypto Algorithm Configuration Review** Okay, let's just make absolutely sure we've covered our bases on the XFRM crypto algorithm setup. I'm going back to `net/xfrm/Kconfig` for a final look-see at the `XFRM_USER` and `XFRM_ALGO` dependencies. Yep, `XFRM_USER` still properly selects `XFRM_ALGO`, which in turn triggers the compilation of `xfrm_algo.c`. Good. That’s solid. Now, let's mentally walk through those key symbols again, just to be certain: `xfrm_ealg_get_byname`, `xfrm_find_algo`, `xfrm_probe_algs`, and `attach_crypt`. Right, right. These aren't exactly ubiquitous; they're all pretty clearly tied to the XFRM crypto algorithm configuration, specifically during the setup phase. They're not going to be in any hot paths. As I recall, they're only invoked during XFRM Security Association (SA) configuration, typically through a Netlink `XFRM_MSG_NEWSA` message. That's precisely what we want. Okay, let’s revisit the `EnableConfigs` one last time to confirm everything is consistent: we need `XFRM`, `XFRM_ALGO`, `XFRM_USER`, `CRYPTO_ARIA`, `CRYPTO_CBC`, `CRYPTO_CTR`, and `INET_ESP`. Yep, those are all present and accounted for. They are all correct and I can defend their inclusion without any issues. Alright, that's everything. It all checks out. Time to make the final call to set-results. |
| 32/2 | 2026/09/09 06:40 | tool | set-results |
0mArgs:{
"EnableConfigs": [
"XFRM",
"XFRM_ALGO",
"XFRM_USER",
"CRYPTO_ARIA",
"CRYPTO_CBC",
"CRYPTO_CTR",
"INET_ESP"
],
"FocusSymbols": [
"xfrm_ealg_get_byname",
"xfrm_find_algo",
"xfrm_probe_algs",
"attach_crypt"
],
"Reasoning": "The patch adds ARIA cipher algorithms (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") to the XFRM encryption algorithm registry (ealg_list). This enables user-space via XFRM Netlink interface to configure IPsec SAs with ARIA encryption, exercising the crypto subsystem and XFRM packet processing paths.",
"WorthFuzzing": true
}Results: {
"EnableConfigs": [
"XFRM",
"XFRM_ALGO",
"XFRM_USER",
"CRYPTO_ARIA",
"CRYPTO_CBC",
"CRYPTO_CTR",
"INET_ESP"
],
"FocusSymbols": [
"xfrm_ealg_get_byname",
"xfrm_find_algo",
"xfrm_probe_algs",
"attach_crypt"
],
"Reasoning": "The patch adds ARIA cipher algorithms (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") to the XFRM encryption algorithm registry (ealg_list). This enables user-space via XFRM Netlink interface to configure IPsec SAs with ARIA encryption, exercising the crypto subsystem and XFRM packet processing paths.",
"WorthFuzzing": true
} |
| 33/1 | 2026/09/09 06:40 | action | If |
0mArgs:{
"WorthFuzzing": true
}Results: null |
| 34/2 | 2026/09/09 06:40 | agent | kmsan-evaluator |
0mModel:core Args: null Results: {
"KMSANReasoning": "The patch merely registers two existing cipher suites (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") into the static `ealg_list` table in `net/xfrm/xfrm_algo.c` to enable their use in XFRM/IPsec.\n\n1. Uninitialized Memory \u0026 Info-leak Analysis:\n- The added entries are static `struct xfrm_algo_desc` definitions in `.data` / `.rodata` where unspecified fields are zero-initialized by the compiler.\n- No dynamic memory allocation, stack variable handling, structure padding exposure, or netlink / `copy_to_user` data transfers are introduced or modified.\n- No control flow or bounds checking logic is changed that could cause reads of uninitialized memory.\n\n2. KASAN vs KMSAN applicability:\n- Any memory safety issues related to cipher contexts, skcipher crypto operations, or XFRM packet processing (out-of-bounds access, buffer overruns, use-after-free) are detectable by standard KASAN.\n- There are no KMSAN-specific uninitialized memory risks that justify a dedicated KMSAN fuzzing session.",
"NeedsKMSAN": false
}Instruction: You are an expert Linux kernel security engineer specializing in kernel memory
error detectors (KASAN and KMSAN). Your job is to review the provided patch series and
determine if the code changes justify spawning a dedicated KMSAN (KernelMemorySanitizer)
fuzzing session in addition to standard KASAN fuzzing.
CRITICAL DISTINCTION BETWEEN KASAN AND KMSAN:
- Standard KASAN kernel builds (upstream-apparmor-kasan.config) already enable
a comprehensive suite of debugging tools and sanitizers, including KASAN
(out-of-bounds accesses, use-after-free, double free, invalid free), LOCKDEP
(locking bugs and deadlocks), UB-sanitizers, and memory corruption checks.
- KMSAN (KernelMemorySanitizer) detects reads of UNINITIALIZED memory (stack, heap,
or page allocations) and kernel-to-user memory info-leaks.
Rule: THERE IS NO SENSE IN RUNNING A KMSAN SESSION IF A BUG CAN BE CAUGHT BY KASAN,
LOCKDEP, OR OTHER STANDARD BUG DETECTORS.
A dedicated KMSAN fuzzing session incurs significant resource costs. You must ONLY
set NeedsKMSAN=true if the code changes introduce or expose UNINITIALIZED MEMORY risks
that are detected ONLY by KMSAN.
Look holistically at the patch series and surrounding code. Even if no direct
uninitialized field accesses or new buffer allocations are added in the diff itself,
a patch may alter control flow, bounds checking, or data length calculations in ways
that change how the rest of the code operates on existing buffers (e.g. allowing
uninitialized stack/heap memory to be read, copied to user space, or used in control
flow). Do not hesitate to use your code access tools to inspect the surrounding code,
called functions, and callers.
Set NeedsKMSAN=true ONLY IF the patch introduces or modifies:
1. Kernel structures sent to user space (via copy_to_user, put_user, netlink skb
attributes, ioctl output arguments, socket options, or BPF buffers) where fields
or structure padding might not be fully initialized/zeroed.
2. Conditional logic or branching that depends on potentially uninitialized variables
or struct fields.
3. Allocation or initialization of complex data structures where uninitialized fields
could be read later in reachable code paths.
4. Bounds checks, lengths, or logic in a way that allows surrounding code to access
uninitialized bytes of existing buffers.
Set NeedsKMSAN=false IF:
- The code changes primarily risk out-of-bounds access, array overflows, NULL pointer
dereferences, locking deadlocks, or use-after-free bugs (these are already caught
by KASAN, LOCKDEP, or standard bug detectors).
- All stack/heap structures touched or introduced by the patch are fully zeroed
or initialized (e.g. using = {0}, memset, kzalloc) before being read or copied.
- The patch does not introduce any risk of uninitialized memory usage or info-leaks.
Use your code access tools to inspect the surrounding code if necessary, then provide
detailed KMSANReasoning contrasting KASAN vs KMSAN applicability for this patch.
Prefer calling several tools at the same time to save round-trips.
Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.
Prompt: Target architecture: amd64
For your convenience, here is the diff of the changes:
commit 3a53d6ecde258cac0044b5e9f0e926dc033592e5
Author: syz-cluster <triage@syzkaller.com>
Date: Wed Sep 9 06:38:50 2026 +0000
syz-cluster: applied patch under review
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 70434495f23f5..16c70dc1a4268 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -512,6 +512,34 @@ static struct xfrm_algo_desc ealg_list[] = {
.sadb_alg_maxbits = 256
}
},
+{
+ .name = "cbc(aria)",
+ .compat = "aria",
+
+ .uinfo = {
+ .encr = {
+ .geniv = "echainiv",
+ .blockbits = 128,
+ .defkeybits = 256,
+ }
+ },
+
+ .pfkey_supported = 0,
+},
+{
+ .name = "rfc3686(ctr(aria))",
+ .compat = "aria",
+
+ .uinfo = {
+ .encr = {
+ .geniv = "seqiv",
+ .blockbits = 128,
+ .defkeybits = 160,
+ }
+ },
+
+ .pfkey_supported = 0,
+},
{
.name = "cbc(twofish)",
.compat = "twofish",
|
| 35/3 | 2026/09/09 06:40 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 2253 output: 39 thoughts: 187 Thoughts: **KMSAN Fuzzing for ARIA Cipher Algorithm Patch?** Okay, so I'm looking at this patch that adds ARIA cipher algorithms, specifically `cbc(aria)` and `rfc3686(ctr(aria))`, to `xfrm_algo.c`. The question is, does this require a dedicated KMSAN fuzzing session? Let's break it down. We're dealing with evaluating the Linux kernel sanitizer suitability here, focusing on KASAN versus KMSAN for a patch. This is essentially a benign defensive security analysis or QA task, patch evaluation; we're not dealing with any active exploit generation or malicious code. Now, let's dive into the code. This patch just seems to be adding two entries to the `ealg_list` array within `net/xfrm/xfrm_algo.c`. Time to grab that file, specifically around line 512, and check out what's already there. I'll probably fire up `read-file` or `grepper` and see what the surrounding code context looks like. This will help me assess the patch's integration and potential risks. My immediate impression is that this is relatively straightforward, and whether a dedicated KMSAN session is necessary will hinge on my understanding of the existing code and any potential interactions that the added algorithms might have. |
| 36/3 | 2026/09/09 06:40 | tool | read-file |
0mArgs:{
"File": "net/xfrm/xfrm_algo.c",
"FirstLine": 500,
"LineCount": 60
}Results: {
"Contents": " 500:\t\t\t\t.geniv = \"echainiv\",\n 501:\t\t\t\t.blockbits = 128,\n 502:\t\t\t\t.defkeybits = 128,\n 503:\t\t\t}\n 504:\t\t},\n 505:\t\n 506:\t\t.pfkey_supported = 1,\n 507:\t\n 508:\t\t.desc = {\n 509:\t\t\t.sadb_alg_id = SADB_X_EALG_CAMELLIACBC,\n 510:\t\t\t.sadb_alg_ivlen = 8,\n 511:\t\t\t.sadb_alg_minbits = 128,\n 512:\t\t\t.sadb_alg_maxbits = 256\n 513:\t\t}\n 514:\t},\n 515:\t{\n 516:\t\t.name = \"cbc(aria)\",\n 517:\t\t.compat = \"aria\",\n 518:\t\n 519:\t\t.uinfo = {\n 520:\t\t\t.encr = {\n 521:\t\t\t\t.geniv = \"echainiv\",\n 522:\t\t\t\t.blockbits = 128,\n 523:\t\t\t\t.defkeybits = 256,\n 524:\t\t\t}\n 525:\t\t},\n 526:\t\n 527:\t\t.pfkey_supported = 0,\n 528:\t},\n 529:\t{\n 530:\t\t.name = \"rfc3686(ctr(aria))\",\n 531:\t\t.compat = \"aria\",\n 532:\t\n 533:\t\t.uinfo = {\n 534:\t\t\t.encr = {\n 535:\t\t\t\t.geniv = \"seqiv\",\n 536:\t\t\t\t.blockbits = 128,\n 537:\t\t\t\t.defkeybits = 160,\n 538:\t\t\t}\n 539:\t\t},\n 540:\t\n 541:\t\t.pfkey_supported = 0,\n 542:\t},\n 543:\t{\n 544:\t\t.name = \"cbc(twofish)\",\n 545:\t\t.compat = \"twofish\",\n 546:\t\n 547:\t\t.uinfo = {\n 548:\t\t\t.encr = {\n 549:\t\t\t\t.geniv = \"echainiv\",\n 550:\t\t\t\t.blockbits = 128,\n 551:\t\t\t\t.defkeybits = 128,\n 552:\t\t\t}\n 553:\t\t},\n 554:\t\n 555:\t\t.pfkey_supported = 1,\n 556:\t\n 557:\t\t.desc = {\n 558:\t\t\t.sadb_alg_id = SADB_X_EALG_TWOFISHCBC,\n 559:\t\t\t.sadb_alg_ivlen = 8,\n"
} |
| 37/3 | 2026/09/09 06:40 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 3540 output: 29 thoughts: 57 Thoughts: **Investigating the Algorithm Usage** Okay, so I need to understand the role of `xfrm_algo_desc` here, and I'm particularly curious if there are other, related algorithms in the `ealg_list`. It seems like a deeper dive into `net/xfrm/xfrm_algo.c` is in order. I should probably start by reading through the code there more closely. Or, a quick grep for `ealg_list` might give me some useful clues and contextual information. Time to dig in and see what I can uncover! |
| 38/3 | 2026/09/09 06:40 | tool | grepper |
0mArgs:{
"Expression": "ealg_list",
"PathPrefix": "net/xfrm/"
}Results: {
"Output": "net/xfrm/xfrm_algo.c=175=static struct xfrm_algo_desc aalg_list[] = {\n--\nnet/xfrm/xfrm_algo.c-346-\nnet/xfrm/xfrm_algo.c:347:static struct xfrm_algo_desc ealg_list[] = {\nnet/xfrm/xfrm_algo.c-348-{\n--\nnet/xfrm/xfrm_algo.c=645=static inline int ealg_entries(void)\nnet/xfrm/xfrm_algo.c-646-{\nnet/xfrm/xfrm_algo.c:647:\treturn ARRAY_SIZE(ealg_list);\nnet/xfrm/xfrm_algo.c-648-}\n--\nnet/xfrm/xfrm_algo.c=667=static const struct xfrm_algo_list xfrm_aalg_list = {\n--\nnet/xfrm/xfrm_algo.c-672-\nnet/xfrm/xfrm_algo.c:673:static const struct xfrm_algo_list xfrm_ealg_list = {\nnet/xfrm/xfrm_algo.c-674-\t.find = crypto_has_skcipher,\nnet/xfrm/xfrm_algo.c:675:\t.algs = ealg_list,\nnet/xfrm/xfrm_algo.c:676:\t.entries = ARRAY_SIZE(ealg_list),\nnet/xfrm/xfrm_algo.c-677-};\n--\nnet/xfrm/xfrm_algo.c=726=struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id)\nnet/xfrm/xfrm_algo.c-727-{\nnet/xfrm/xfrm_algo.c:728:\treturn xfrm_find_algo(\u0026xfrm_ealg_list, xfrm_alg_id_match,\nnet/xfrm/xfrm_algo.c-729-\t\t\t (void *)(unsigned long)alg_id, 1);\n--\nnet/xfrm/xfrm_algo.c=756=struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe)\nnet/xfrm/xfrm_algo.c-757-{\nnet/xfrm/xfrm_algo.c:758:\treturn xfrm_find_algo(\u0026xfrm_ealg_list, xfrm_alg_name_match, name,\nnet/xfrm/xfrm_algo.c-759-\t\t\t probe);\n--\nnet/xfrm/xfrm_algo.c=806=struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx)\n--\nnet/xfrm/xfrm_algo.c-810-\nnet/xfrm/xfrm_algo.c:811:\treturn \u0026ealg_list[idx];\nnet/xfrm/xfrm_algo.c-812-}\n--\nnet/xfrm/xfrm_algo.c=820=void xfrm_probe_algs(void)\n--\nnet/xfrm/xfrm_algo.c-832-\tfor (i = 0; i \u003c ealg_entries(); i++) {\nnet/xfrm/xfrm_algo.c:833:\t\tstatus = crypto_has_skcipher(ealg_list[i].name, 0, 0);\nnet/xfrm/xfrm_algo.c:834:\t\tif (ealg_list[i].available != status)\nnet/xfrm/xfrm_algo.c:835:\t\t\tealg_list[i].available = status;\nnet/xfrm/xfrm_algo.c-836-\t}\n--\nnet/xfrm/xfrm_algo.c=857=int xfrm_count_pfkey_enc_supported(void)\n--\nnet/xfrm/xfrm_algo.c-861-\tfor (i = 0, n = 0; i \u003c ealg_entries(); i++)\nnet/xfrm/xfrm_algo.c:862:\t\tif (ealg_list[i].available \u0026\u0026 ealg_list[i].pfkey_supported)\nnet/xfrm/xfrm_algo.c-863-\t\t\tn++;\n"
} |
| 39/3 | 2026/09/09 06:40 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 4834 output: 23 thoughts: 165 Thoughts: **Analyzing the Aria Encryption Implementation** Okay, let's break this down. My initial observation is that `cbc(aria)` and `rfc3686(ctr(aria))` are listed as static entries within `ealg_list`. This is a static array, residing in static memory, which means the C standard mandates that uninitialized fields will be zeroed by the compiler. These entries are registering standard skcipher encryption algorithms for XFRM/IPsec, which is standard practice. The fact that `pfkey_supported = 0` is crucial. This means these algorithms aren't exposed through PF_KEY directly; instead, they are only accessible via netlink XFRM_MSG_* calls, based on name. Now, the key question: am I looking at a potential memory issue related to uninitialized data in the aria crypto implementations, or is this just straightforward configuration and table population? Hold on... I believe I have an answer. The "aria" crypto module already seems to exist, specifically in `crypto/aria*.c` or possibly the generic version, `crypto/aria_generic.c`. Now I need to dive into those files to confirm the implementation and see if there are any subtle issues hiding there, before moving any further. My next step is to examine the contents of the `crypto/aria*` files. |
| 40/3 | 2026/09/09 06:40 | tool | grepper |
0mArgs:{
"Expression": "aria",
"PathPrefix": "crypto/"
}Results: {
"Output": "crypto/Kconfig=388=config CRYPTO_ANUBIS\n--\ncrypto/Kconfig-394-\ncrypto/Kconfig:395:\t Anubis is a variable key length cipher which can use keys from\ncrypto/Kconfig-396-\t 128 bits to 320 bits in length. It was evaluated as a entrant\n--\ncrypto/Kconfig=417=config CRYPTO_BLOWFISH\n--\ncrypto/Kconfig-423-\ncrypto/Kconfig:424:\t This is a variable key length cipher which can use keys from 32\ncrypto/Kconfig-425-\t bits to 448 bits in length. It's fast, simple and specifically\n--\ncrypto/Kconfig=667=config CRYPTO_CTS\n--\ncrypto/Kconfig-671-\thelp\ncrypto/Kconfig:672:\t CBC-CS3 variant of CTS (Cipher Text Stealing) (NIST\ncrypto/Kconfig-673-\t Addendum to SP800-38A (October 2010))\n--\ncrypto/Kconfig=717=config CRYPTO_XCTR\n--\ncrypto/Kconfig-723-\ncrypto/Kconfig:724:\t This blockcipher mode is a variant of CTR mode using XORs and little-endian\ncrypto/Kconfig-725-\t addition rather than big-endian arithmetic.\n--\ncrypto/Kconfig=1138=choice\n--\ncrypto/Kconfig-1145-\t to that cache is measured. The closer the cache is to the CPU\ncrypto/Kconfig:1146:\t the less variations are measured and thus the less entropy is\ncrypto/Kconfig-1147-\t obtained. Thus, if the memory size fits into the L1 cache, the\n--\ncrypto/Makefile=143=obj-$(CONFIG_CRYPTO_SEED) += seed.o\ncrypto/Makefile:144:obj-$(CONFIG_CRYPTO_ARIA) += aria_generic.o\ncrypto/Makefile-145-obj-$(CONFIG_CRYPTO_CHACHA20) += chacha.o\n--\ncrypto/adiantum.c-46-/*\ncrypto/adiantum.c:47: * The specification allows variable-length tweaks, but Linux's crypto API\ncrypto/adiantum.c-48- * currently only allows algorithms to support a single length. The \"natural\"\n--\ncrypto/aes.c=899=static int crypto_aes_ccm_init(struct aes_ccm_ctx *ctx,\n--\ncrypto/aes.c-907-\t/*\ncrypto/aes.c:908:\t * CCM accepts a variable-length nonce between 7 and 13 bytes\ncrypto/aes.c-909-\t * inclusively, while crypto_aead assumes a fixed-length IV. This is\n--\ncrypto/aria_generic.c-16-\ncrypto/aria_generic.c:17:#include \u003ccrypto/aria.h\u003e\ncrypto/aria_generic.c-18-#include \u003clinux/unaligned.h\u003e\n--\ncrypto/aria_generic.c=20=static const u32 key_rc[20] = {\n--\ncrypto/aria_generic.c-27-\ncrypto/aria_generic.c:28:static void aria_set_encrypt_key(struct aria_ctx *ctx, const u8 *in_key,\ncrypto/aria_generic.c-29-\t\t\t\t unsigned int key_len)\n--\ncrypto/aria_generic.c-47-\ncrypto/aria_generic.c:48:\taria_subst_diff_odd(\u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c-49-\n--\ncrypto/aria_generic.c-81-\ncrypto/aria_generic.c:82:\taria_subst_diff_even(\u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c-83-\n--\ncrypto/aria_generic.c-98-\ncrypto/aria_generic.c:99:\taria_subst_diff_odd(\u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c-100-\n--\ncrypto/aria_generic.c-105-\ncrypto/aria_generic.c:106:\taria_gsrk(ctx-\u003eenc_key[rkidx], w0, w1, 19);\ncrypto/aria_generic.c-107-\trkidx++;\ncrypto/aria_generic.c:108:\taria_gsrk(ctx-\u003eenc_key[rkidx], w1, w2, 19);\ncrypto/aria_generic.c-109-\trkidx++;\ncrypto/aria_generic.c:110:\taria_gsrk(ctx-\u003eenc_key[rkidx], w2, w3, 19);\ncrypto/aria_generic.c-111-\trkidx++;\ncrypto/aria_generic.c:112:\taria_gsrk(ctx-\u003eenc_key[rkidx], w3, w0, 19);\ncrypto/aria_generic.c-113-\ncrypto/aria_generic.c-114-\trkidx++;\ncrypto/aria_generic.c:115:\taria_gsrk(ctx-\u003eenc_key[rkidx], w0, w1, 31);\ncrypto/aria_generic.c-116-\trkidx++;\ncrypto/aria_generic.c:117:\taria_gsrk(ctx-\u003eenc_key[rkidx], w1, w2, 31);\ncrypto/aria_generic.c-118-\trkidx++;\ncrypto/aria_generic.c:119:\taria_gsrk(ctx-\u003eenc_key[rkidx], w2, w3, 31);\ncrypto/aria_generic.c-120-\trkidx++;\ncrypto/aria_generic.c:121:\taria_gsrk(ctx-\u003eenc_key[rkidx], w3, w0, 31);\ncrypto/aria_generic.c-122-\ncrypto/aria_generic.c-123-\trkidx++;\ncrypto/aria_generic.c:124:\taria_gsrk(ctx-\u003eenc_key[rkidx], w0, w1, 67);\ncrypto/aria_generic.c-125-\trkidx++;\ncrypto/aria_generic.c:126:\taria_gsrk(ctx-\u003eenc_key[rkidx], w1, w2, 67);\ncrypto/aria_generic.c-127-\trkidx++;\ncrypto/aria_generic.c:128:\taria_gsrk(ctx-\u003eenc_key[rkidx], w2, w3, 67);\ncrypto/aria_generic.c-129-\trkidx++;\ncrypto/aria_generic.c:130:\taria_gsrk(ctx-\u003eenc_key[rkidx], w3, w0, 67);\ncrypto/aria_generic.c-131-\ncrypto/aria_generic.c-132-\trkidx++;\ncrypto/aria_generic.c:133:\taria_gsrk(ctx-\u003eenc_key[rkidx], w0, w1, 97);\ncrypto/aria_generic.c-134-\tif (key_len \u003e 16) {\ncrypto/aria_generic.c-135-\t\trkidx++;\ncrypto/aria_generic.c:136:\t\taria_gsrk(ctx-\u003eenc_key[rkidx], w1, w2, 97);\ncrypto/aria_generic.c-137-\t\trkidx++;\ncrypto/aria_generic.c:138:\t\taria_gsrk(ctx-\u003eenc_key[rkidx], w2, w3, 97);\ncrypto/aria_generic.c-139-\n--\ncrypto/aria_generic.c-141-\t\t\trkidx++;\ncrypto/aria_generic.c:142:\t\t\taria_gsrk(ctx-\u003eenc_key[rkidx], w3, w0, 97);\ncrypto/aria_generic.c-143-\ncrypto/aria_generic.c-144-\t\t\trkidx++;\ncrypto/aria_generic.c:145:\t\t\taria_gsrk(ctx-\u003eenc_key[rkidx], w0, w1, 109);\ncrypto/aria_generic.c-146-\t\t}\n--\ncrypto/aria_generic.c-149-\ncrypto/aria_generic.c:150:static void aria_set_decrypt_key(struct aria_ctx *ctx)\ncrypto/aria_generic.c-151-{\n--\ncrypto/aria_generic.c-159-\tfor (i = 1; i \u003c ctx-\u003erounds; i++) {\ncrypto/aria_generic.c:160:\t\tctx-\u003edec_key[i][0] = aria_m(ctx-\u003eenc_key[ctx-\u003erounds - i][0]);\ncrypto/aria_generic.c:161:\t\tctx-\u003edec_key[i][1] = aria_m(ctx-\u003eenc_key[ctx-\u003erounds - i][1]);\ncrypto/aria_generic.c:162:\t\tctx-\u003edec_key[i][2] = aria_m(ctx-\u003eenc_key[ctx-\u003erounds - i][2]);\ncrypto/aria_generic.c:163:\t\tctx-\u003edec_key[i][3] = aria_m(ctx-\u003eenc_key[ctx-\u003erounds - i][3]);\ncrypto/aria_generic.c-164-\ncrypto/aria_generic.c:165:\t\taria_diff_word(\u0026ctx-\u003edec_key[i][0], \u0026ctx-\u003edec_key[i][1],\ncrypto/aria_generic.c-166-\t\t\t \u0026ctx-\u003edec_key[i][2], \u0026ctx-\u003edec_key[i][3]);\ncrypto/aria_generic.c:167:\t\taria_diff_byte(\u0026ctx-\u003edec_key[i][1],\ncrypto/aria_generic.c-168-\t\t\t \u0026ctx-\u003edec_key[i][2], \u0026ctx-\u003edec_key[i][3]);\ncrypto/aria_generic.c:169:\t\taria_diff_word(\u0026ctx-\u003edec_key[i][0], \u0026ctx-\u003edec_key[i][1],\ncrypto/aria_generic.c-170-\t\t\t \u0026ctx-\u003edec_key[i][2], \u0026ctx-\u003edec_key[i][3]);\n--\ncrypto/aria_generic.c-173-\ncrypto/aria_generic.c:174:int aria_set_key(struct crypto_tfm *tfm, const u8 *in_key, unsigned int key_len)\ncrypto/aria_generic.c-175-{\ncrypto/aria_generic.c:176:\tstruct aria_ctx *ctx = crypto_tfm_ctx(tfm);\ncrypto/aria_generic.c-177-\n--\ncrypto/aria_generic.c-187-\ncrypto/aria_generic.c:188:\taria_set_encrypt_key(ctx, in_key, key_len);\ncrypto/aria_generic.c:189:\taria_set_decrypt_key(ctx);\ncrypto/aria_generic.c-190-\n--\ncrypto/aria_generic.c-192-}\ncrypto/aria_generic.c:193:EXPORT_SYMBOL_GPL(aria_set_key);\ncrypto/aria_generic.c-194-\ncrypto/aria_generic.c:195:static void __aria_crypt(struct aria_ctx *ctx, u8 *out, const u8 *in,\ncrypto/aria_generic.c-196-\t\t\t u32 key[][ARIA_RD_KEY_WORDS])\n--\ncrypto/aria_generic.c-207-\ncrypto/aria_generic.c:208:\taria_add_round_key(key[rkidx], \u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c-209-\trkidx++;\ncrypto/aria_generic.c-210-\ncrypto/aria_generic.c:211:\taria_subst_diff_odd(\u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c:212:\taria_add_round_key(key[rkidx], \u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c-213-\trkidx++;\n--\ncrypto/aria_generic.c-215-\twhile ((rounds -= 2) \u003e 0) {\ncrypto/aria_generic.c:216:\t\taria_subst_diff_even(\u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c:217:\t\taria_add_round_key(key[rkidx], \u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c-218-\t\trkidx++;\ncrypto/aria_generic.c-219-\ncrypto/aria_generic.c:220:\t\taria_subst_diff_odd(\u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c:221:\t\taria_add_round_key(key[rkidx], \u0026reg0, \u0026reg1, \u0026reg2, \u0026reg3);\ncrypto/aria_generic.c-222-\t\trkidx++;\n--\ncrypto/aria_generic.c-247-\ncrypto/aria_generic.c:248:void aria_encrypt(void *_ctx, u8 *out, const u8 *in)\ncrypto/aria_generic.c-249-{\ncrypto/aria_generic.c:250:\tstruct aria_ctx *ctx = (struct aria_ctx *)_ctx;\ncrypto/aria_generic.c-251-\ncrypto/aria_generic.c:252:\t__aria_crypt(ctx, out, in, ctx-\u003eenc_key);\ncrypto/aria_generic.c-253-}\ncrypto/aria_generic.c:254:EXPORT_SYMBOL_GPL(aria_encrypt);\ncrypto/aria_generic.c-255-\ncrypto/aria_generic.c:256:void aria_decrypt(void *_ctx, u8 *out, const u8 *in)\ncrypto/aria_generic.c-257-{\ncrypto/aria_generic.c:258:\tstruct aria_ctx *ctx = (struct aria_ctx *)_ctx;\ncrypto/aria_generic.c-259-\ncrypto/aria_generic.c:260:\t__aria_crypt(ctx, out, in, ctx-\u003edec_key);\ncrypto/aria_generic.c-261-}\ncrypto/aria_generic.c:262:EXPORT_SYMBOL_GPL(aria_decrypt);\ncrypto/aria_generic.c-263-\ncrypto/aria_generic.c:264:static void __aria_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)\ncrypto/aria_generic.c-265-{\ncrypto/aria_generic.c:266:\tstruct aria_ctx *ctx = crypto_tfm_ctx(tfm);\ncrypto/aria_generic.c-267-\ncrypto/aria_generic.c:268:\t__aria_crypt(ctx, out, in, ctx-\u003eenc_key);\ncrypto/aria_generic.c-269-}\ncrypto/aria_generic.c-270-\ncrypto/aria_generic.c:271:static void __aria_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)\ncrypto/aria_generic.c-272-{\ncrypto/aria_generic.c:273:\tstruct aria_ctx *ctx = crypto_tfm_ctx(tfm);\ncrypto/aria_generic.c-274-\ncrypto/aria_generic.c:275:\t__aria_crypt(ctx, out, in, ctx-\u003edec_key);\ncrypto/aria_generic.c-276-}\ncrypto/aria_generic.c-277-\ncrypto/aria_generic.c:278:static struct crypto_alg aria_alg = {\ncrypto/aria_generic.c:279:\t.cra_name\t\t=\t\"aria\",\ncrypto/aria_generic.c:280:\t.cra_driver_name\t=\t\"aria-generic\",\ncrypto/aria_generic.c-281-\t.cra_priority\t\t=\t100,\n--\ncrypto/aria_generic.c-283-\t.cra_blocksize\t\t=\tARIA_BLOCK_SIZE,\ncrypto/aria_generic.c:284:\t.cra_ctxsize\t\t=\tsizeof(struct aria_ctx),\ncrypto/aria_generic.c-285-\t.cra_module\t\t=\tTHIS_MODULE,\n--\ncrypto/aria_generic.c-289-\t\t\t.cia_max_keysize\t=\tARIA_MAX_KEY_SIZE,\ncrypto/aria_generic.c:290:\t\t\t.cia_setkey\t\t=\taria_set_key,\ncrypto/aria_generic.c:291:\t\t\t.cia_encrypt\t\t=\t__aria_encrypt,\ncrypto/aria_generic.c:292:\t\t\t.cia_decrypt\t\t=\t__aria_decrypt\ncrypto/aria_generic.c-293-\t\t}\n--\ncrypto/aria_generic.c-296-\ncrypto/aria_generic.c:297:static int __init aria_init(void)\ncrypto/aria_generic.c-298-{\ncrypto/aria_generic.c:299:\treturn crypto_register_alg(\u0026aria_alg);\ncrypto/aria_generic.c-300-}\ncrypto/aria_generic.c-301-\ncrypto/aria_generic.c:302:static void __exit aria_fini(void)\ncrypto/aria_generic.c-303-{\ncrypto/aria_generic.c:304:\tcrypto_unregister_alg(\u0026aria_alg);\ncrypto/aria_generic.c-305-}\ncrypto/aria_generic.c-306-\ncrypto/aria_generic.c:307:module_init(aria_init);\ncrypto/aria_generic.c:308:module_exit(aria_fini);\ncrypto/aria_generic.c-309-\n--\ncrypto/aria_generic.c=312=MODULE_AUTHOR(\"Taehee Yoo \u003cap420073@gmail.com\u003e\");\ncrypto/aria_generic.c:313:MODULE_ALIAS_CRYPTO(\"aria\");\ncrypto/aria_generic.c:314:MODULE_ALIAS_CRYPTO(\"aria-generic\");\n--\ncrypto/asymmetric_keys/pkcs7.asn1=77=SignerInfo ::= SEQUENCE {\ncrypto/asymmetric_keys/pkcs7.asn1-78-\tversion\t\t\tINTEGER ({ pkcs7_note_signerinfo_version }),\ncrypto/asymmetric_keys/pkcs7.asn1:79:\tsid\t\t\tSignerIdentifier, -- CMS variant, not PKCS#7\ncrypto/asymmetric_keys/pkcs7.asn1-80-\tdigestAlgorithm\t\tDigestAlgorithmIdentifier ({ pkcs7_sig_note_digest_algo }),\n--\ncrypto/asymmetric_keys/pkcs7_trust.c=22=static int pkcs7_validate_trust_one(struct pkcs7_message *pkcs7,\n--\ncrypto/asymmetric_keys/pkcs7_trust.c-54-\t\t\t * is apparently the same as one we already trust.\ncrypto/asymmetric_keys/pkcs7_trust.c:55:\t\t\t * Verify that the trusted variant can also validate\ncrypto/asymmetric_keys/pkcs7_trust.c-56-\t\t\t * the signature on the descendant.\n--\ncrypto/asymmetric_keys/pkcs8.asn1-7---\ncrypto/asymmetric_keys/pkcs8.asn1:8:-- This is the unencrypted variant\ncrypto/asymmetric_keys/pkcs8.asn1-9---\n--\ncrypto/camellia_generic.c=643=static void camellia_setup256(const unsigned char *key, u32 *subkey)\n--\ncrypto/camellia_generic.c-646-\tu32 krll, krlr, krrl, krrr; /* right half of key */\ncrypto/camellia_generic.c:647:\tu32 il, ir, t0, t1, w0, w1; /* temporary variables */\ncrypto/camellia_generic.c-648-\tu32 subL[34];\n--\ncrypto/camellia_generic.c=843=static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)\ncrypto/camellia_generic.c-844-{\ncrypto/camellia_generic.c:845:\tu32 il, ir, t0, t1; /* temporary variables */\ncrypto/camellia_generic.c-846-\n--\ncrypto/camellia_generic.c=898=static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)\ncrypto/camellia_generic.c-899-{\ncrypto/camellia_generic.c:900:\tu32 il, ir, t0, t1; /* temporary variables */\ncrypto/camellia_generic.c-901-\n--\ncrypto/hctr2.c-27-/*\ncrypto/hctr2.c:28: * The specification allows variable-length tweaks, but Linux's crypto API\ncrypto/hctr2.c-29- * currently only allows algorithms to support a single length. The \"natural\"\n--\ncrypto/jitterentropy-kcapi.c=70=void jent_zfree(void *ptr)\n--\ncrypto/jitterentropy-kcapi.c-76- * Obtain a high-resolution time stamp value. The time stamp is used to measure\ncrypto/jitterentropy-kcapi.c:77: * the execution time of a given code path and its variations. Hence, the time\ncrypto/jitterentropy-kcapi.c-78- * stamp must have a sufficiently high resolution.\n--\ncrypto/jitterentropy-testing.c=26=static struct dentry *jent_raw_debugfs_root = NULL;\n--\ncrypto/jitterentropy-testing.c-30-/*\ncrypto/jitterentropy-testing.c:31: * boot variable:\ncrypto/jitterentropy-testing.c-32- * 0 ==\u003e No boot test, gathering of runtime data allowed\n--\ncrypto/jitterentropy.c=64=struct rand_data {\n--\ncrypto/jitterentropy.c-116-#define JENT_ENOMONOTONIC\t3 /* Timer is not monotonic increasing */\ncrypto/jitterentropy.c:117:#define JENT_EVARVAR\t\t5 /* Timer does not produce variations of\ncrypto/jitterentropy.c:118:\t\t\t\t * variations (2nd derivation of time is\ncrypto/jitterentropy.c-119-\t\t\t\t * zero). */\n--\ncrypto/jitterentropy.c=422=static void jent_condition_data(struct rand_data *ec, __u64 time, int stuck)\n--\ncrypto/jitterentropy.c-441-/*\ncrypto/jitterentropy.c:442: * Memory Access noise source -- this is a noise source based on variations in\ncrypto/jitterentropy.c-443- *\t\t\t\t memory access times\n--\ncrypto/jitterentropy.c-445- * This function performs memory accesses which will add to the timing\ncrypto/jitterentropy.c:446: * variations due to an unknown amount of CPU wait states that need to be\ncrypto/jitterentropy.c-447- * added when accessing memory. The memory size should be larger than the L1\n--\ncrypto/jitterentropy.c-451- * slower than accessing CPU registers. Therefore, L1 accesses only add minimal\ncrypto/jitterentropy.c:452: * variations as the CPU has hardly to wait. Starting with L2, significant\ncrypto/jitterentropy.c:453: * variations are added because L2 typically does not belong to the CPU any more\ncrypto/jitterentropy.c-454- * and therefore a wider range of CPU wait states is necessary for accesses.\n--\ncrypto/jitterentropy.c=519=static int jent_measure_jitter(struct rand_data *ec, __u64 *ret_current_delta)\n--\ncrypto/jitterentropy.c-524-\ncrypto/jitterentropy.c:525:\t/* Invoke one noise source before time measurement to add variations */\ncrypto/jitterentropy.c-526-\tjent_memaccess(ec, 0);\n--\ncrypto/jitterentropy.c-529-\t * Get time stamp and calculate time delta to previous\ncrypto/jitterentropy.c:530:\t * invocation to measure the timing variations\ncrypto/jitterentropy.c-531-\t */\n--\ncrypto/jitterentropy.c=654=struct rand_data *jent_entropy_collector_alloc(unsigned int osr,\n--\ncrypto/jitterentropy.c-664-\tif (!(flags \u0026 JENT_DISABLE_MEMORY_ACCESS)) {\ncrypto/jitterentropy.c:665:\t\t/* Allocate memory for adding variations based on memory\ncrypto/jitterentropy.c-666-\t\t * access\n--\ncrypto/jitterentropy.c=704=int jent_entropy_init(unsigned int osr, unsigned int flags,\n--\ncrypto/jitterentropy.c-783-\t\t/*\ncrypto/jitterentropy.c:784:\t\t * up to here we did not modify any variable that will be\ncrypto/jitterentropy.c-785-\t\t * evaluated later, but we already performed some work. Thus we\n--\ncrypto/serpent_generic.c-224- * both gcc and clang have misoptimized this function in the past,\ncrypto/serpent_generic.c:225: * producing horrible object code from spilling temporary variables\ncrypto/serpent_generic.c-226- * on the stack. Forcing this part out of line avoids that.\n--\ncrypto/tcrypt.c=1458=static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)\n--\ncrypto/tcrypt.c-1687-\tcase 58:\ncrypto/tcrypt.c:1688:\t\tret = min(ret, tcrypt_test(\"gcm(aria)\"));\ncrypto/tcrypt.c-1689-\t\tbreak;\n--\ncrypto/tcrypt.c-1827-\tcase 192:\ncrypto/tcrypt.c:1828:\t\tret = min(ret, tcrypt_test(\"ecb(aria)\"));\ncrypto/tcrypt.c:1829:\t\tret = min(ret, tcrypt_test(\"cbc(aria)\"));\ncrypto/tcrypt.c:1830:\t\tret = min(ret, tcrypt_test(\"ctr(aria)\"));\ncrypto/tcrypt.c-1831-\t\tbreak;\n--\ncrypto/tcrypt.c-2161-\tcase 227:\ncrypto/tcrypt.c:2162:\t\ttest_cipher_speed(\"ecb(aria)\", ENCRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2163-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2164:\t\ttest_cipher_speed(\"ecb(aria)\", DECRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2165-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2166:\t\ttest_cipher_speed(\"cbc(aria)\", ENCRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2167-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2168:\t\ttest_cipher_speed(\"cbc(aria)\", DECRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2169-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2170:\t\ttest_cipher_speed(\"ctr(aria)\", ENCRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2171-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2172:\t\ttest_cipher_speed(\"ctr(aria)\", DECRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2173-\t\t\t\t speed_template_16_24_32);\n--\ncrypto/tcrypt.c-2176-\tcase 228:\ncrypto/tcrypt.c:2177:\t\ttest_aead_speed(\"gcm(aria)\", ENCRYPT, sec,\ncrypto/tcrypt.c-2178-\t\t\t\tNULL, 0, 16, 8, speed_template_16_24_32);\ncrypto/tcrypt.c:2179:\t\ttest_aead_speed(\"gcm(aria)\", DECRYPT, sec,\ncrypto/tcrypt.c-2180-\t\t\t\tNULL, 0, 16, 8, speed_template_16_24_32);\n--\ncrypto/tcrypt.c-2183-\tcase 229:\ncrypto/tcrypt.c:2184:\t\ttest_mb_aead_speed(\"gcm(aria)\", ENCRYPT, sec, NULL, 0, 16, 8,\ncrypto/tcrypt.c-2185-\t\t\t\t speed_template_16, num_mb);\ncrypto/tcrypt.c:2186:\t\ttest_mb_aead_speed(\"gcm(aria)\", DECRYPT, sec, NULL, 0, 16, 8,\ncrypto/tcrypt.c-2187-\t\t\t\t speed_template_16, num_mb);\n--\ncrypto/tcrypt.c-2569-\tcase 519:\ncrypto/tcrypt.c:2570:\t\ttest_acipher_speed(\"ecb(aria)\", ENCRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2571-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2572:\t\ttest_acipher_speed(\"ecb(aria)\", DECRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2573-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2574:\t\ttest_acipher_speed(\"ctr(aria)\", ENCRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2575-\t\t\t\t speed_template_16_24_32);\ncrypto/tcrypt.c:2576:\t\ttest_acipher_speed(\"ctr(aria)\", DECRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2577-\t\t\t\t speed_template_16_24_32);\n--\ncrypto/tcrypt.c-2773-\tcase 610:\ncrypto/tcrypt.c:2774:\t\ttest_mb_skcipher_speed(\"ecb(aria)\", ENCRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2775-\t\t\t\t speed_template_16_32, num_mb);\ncrypto/tcrypt.c:2776:\t\ttest_mb_skcipher_speed(\"ecb(aria)\", DECRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2777-\t\t\t\t speed_template_16_32, num_mb);\ncrypto/tcrypt.c:2778:\t\ttest_mb_skcipher_speed(\"ctr(aria)\", ENCRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2779-\t\t\t\t speed_template_16_32, num_mb);\ncrypto/tcrypt.c:2780:\t\ttest_mb_skcipher_speed(\"ctr(aria)\", DECRYPT, sec, NULL, 0,\ncrypto/tcrypt.c-2781-\t\t\t\t speed_template_16_32, num_mb);\n--\ncrypto/testmgr.c=4049=static const struct alg_test_desc alg_test_descs[] = {\n--\ncrypto/testmgr.c-4340-\t}, {\ncrypto/testmgr.c:4341:\t\t.alg = \"cbc(aria)\",\ncrypto/testmgr.c-4342-\t\t.test = alg_test_skcipher,\ncrypto/testmgr.c-4343-\t\t.suite = {\ncrypto/testmgr.c:4344:\t\t\t.cipher = __VECS(aria_cbc_tv_template)\ncrypto/testmgr.c-4345-\t\t},\n--\ncrypto/testmgr.c-4513-\t}, {\ncrypto/testmgr.c:4514:\t\t.alg = \"ctr(aria)\",\ncrypto/testmgr.c-4515-\t\t.test = alg_test_skcipher,\ncrypto/testmgr.c-4516-\t\t.suite = {\ncrypto/testmgr.c:4517:\t\t\t.cipher = __VECS(aria_ctr_tv_template)\ncrypto/testmgr.c-4518-\t\t}\n--\ncrypto/testmgr.c-4674-\t}, {\ncrypto/testmgr.c:4675:\t\t.alg = \"ecb(aria)\",\ncrypto/testmgr.c-4676-\t\t.test = alg_test_skcipher,\ncrypto/testmgr.c-4677-\t\t.suite = {\ncrypto/testmgr.c:4678:\t\t\t.cipher = __VECS(aria_tv_template)\ncrypto/testmgr.c-4679-\t\t}\n--\ncrypto/testmgr.c-4898-\t}, {\ncrypto/testmgr.c:4899:\t\t.alg = \"gcm(aria)\",\ncrypto/testmgr.c:4900:\t\t.generic_driver = \"gcm_base(ctr(aria-generic),ghash-lib)\",\ncrypto/testmgr.c-4901-\t\t.test = alg_test_aead,\ncrypto/testmgr.c-4902-\t\t.suite = {\ncrypto/testmgr.c:4903:\t\t\t.aead = __VECS(aria_gcm_tv_template)\ncrypto/testmgr.c-4904-\t\t}\n--\ncrypto/testmgr.h=26281=static const struct cipher_testvec seed_tv_template[] = {\n--\ncrypto/testmgr.h-26321- */\ncrypto/testmgr.h:26322:static const struct cipher_testvec aria_tv_template[] = {\ncrypto/testmgr.h-26323-\t{\n--\ncrypto/testmgr.h-26355-\ncrypto/testmgr.h:26356:static const struct cipher_testvec aria_cbc_tv_template[] = {\ncrypto/testmgr.h-26357-\t{\n--\ncrypto/testmgr.h-27259-\ncrypto/testmgr.h:27260:static const struct cipher_testvec aria_ctr_tv_template[] = {\ncrypto/testmgr.h-27261-\t{\n--\ncrypto/testmgr.h-28163-\ncrypto/testmgr.h:28164:static const struct aead_testvec aria_gcm_tv_template[] = {\ncrypto/testmgr.h-28165-\t{\n--\ncrypto/twofish_common.c=109=static const u32 mds[4][256] = {\n--\ncrypto/twofish_common.c-313- * from the Twofish paper. I've only included the table entries I actually\ncrypto/twofish_common.c:314: * need; I never do a lookup on a variable input of zero and the biggest\ncrypto/twofish_common.c:315: * exponents I'll ever see are 254 (variable) and 237 (constant), so they'll\ncrypto/twofish_common.c-316- * never sum to more than 491.\tI'm repeating part of the exp_to_poly table\n--\ncrypto/twofish_common.c-318- * Since I know my constant operands are never zero, I only have to worry\ncrypto/twofish_common.c:319: * about zero values in the variable operand, and I do it with a simple\ncrypto/twofish_common.c-320- * conditional branch.\tI know conditionals are expensive, but I couldn't\n--\ncrypto/twofish_generic.c-80- * and simultaneously perform the whitening step. INPACK packs word\ncrypto/twofish_generic.c:81: * number n into the variable named by x, using whitening subkey number m.\ncrypto/twofish_generic.c:82: * OUTUNPACK unpacks word number n from the variable named by x, using\ncrypto/twofish_generic.c-83- * whitening subkey number m. */\n"
} |
| 41/3 | 2026/09/09 06:40 | llm | kmsan-evaluator |
0mModel:gemini-3.7-flash Args: null Results: null Tokens: input: 14484 output: 272 thoughts: 491 Thoughts: **My Assessment of the Patch's Uninitialized Memory Risks** Okay, let's break this down. The patch in question is adding static algorithm definitions – specifically for `cbc(aria)` and `rfc3686(ctr(aria))` – to the `ealg_list` table within `net/xfrm/xfrm_algo.c`. My initial concern, as always, is whether this introduces any new opportunities for uninitialized memory to be read, written, or leaked. Given my experience, I need to ensure there are no surprises here. First, I examined `xfrm_algo_desc`. It's a static structure, which is good. Because it's static, the compiler will handle zero-initialization of any unspecified fields. That's a huge win, eliminating a common source of bugs right off the bat. So far, so good. Next, I looked for dynamic allocations, userspace copies, or any new uninitialized data paths affected by this change. The analysis shows that there aren’t any. This patch *itself* doesn't touch any of the existing buffer handling or pointer arithmetic in `xfrm_algo.c`. It's just populating the table. The code doesn't introduce any new heap or stack buffers. Furthermore, the algorithms themselves – `aria`, and the templates like `echainiv`, `seqiv`, `rfc3686`, `ctr`, and `cbc` – are all pre-existing standard crypto drivers and templates within the crypto subsystem. Therefore, this patch isn't the origin of any such risks. Since existing XFRM states configured with these algorithms use allocated skcipher templates, there is no real change that would open this up. Because of this, I believe it's very unlikely that any new vulnerabilities will arise from this addition. Since there's no code that would involve a copy to user, there should be no opportunity for an info-leak. Now, concerning instrumentation and testing, I think KASAN already adequately handles the memory access issues, buffer bounds errors, etc., that might arise when these algorithms are used in XFRM. Therefore, the addition of KMSAN isn't warranted here. Summarizing my reasoning: 1. **What's being added**: We're just adding the new cipher suites to a static table. 2. **Static initialization**: The table entries are static `xfrm_algo_desc` structs, zero-initialized by the compiler. 3. **No risk introduced**: No new heap or stack, size calculations, control flow on uninitialized variables, or data copies to user space. 4. **KASAN adequacy**: KASAN already addresses memory bounds and validity issues during XFRM and crypto operations. KMSAN is not necessary. So, I'm confident in calling `set-results` with `NeedsKMSAN = false`. |
| 42/3 | 2026/09/09 06:40 | tool | set-results |
0mArgs:{
"KMSANReasoning": "The patch merely registers two existing cipher suites (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") into the static `ealg_list` table in `net/xfrm/xfrm_algo.c` to enable their use in XFRM/IPsec.\n\n1. Uninitialized Memory \u0026 Info-leak Analysis:\n- The added entries are static `struct xfrm_algo_desc` definitions in `.data` / `.rodata` where unspecified fields are zero-initialized by the compiler.\n- No dynamic memory allocation, stack variable handling, structure padding exposure, or netlink / `copy_to_user` data transfers are introduced or modified.\n- No control flow or bounds checking logic is changed that could cause reads of uninitialized memory.\n\n2. KASAN vs KMSAN applicability:\n- Any memory safety issues related to cipher contexts, skcipher crypto operations, or XFRM packet processing (out-of-bounds access, buffer overruns, use-after-free) are detectable by standard KASAN.\n- There are no KMSAN-specific uninitialized memory risks that justify a dedicated KMSAN fuzzing session.",
"NeedsKMSAN": false
}Results: {
"KMSANReasoning": "The patch merely registers two existing cipher suites (\"cbc(aria)\" and \"rfc3686(ctr(aria))\") into the static `ealg_list` table in `net/xfrm/xfrm_algo.c` to enable their use in XFRM/IPsec.\n\n1. Uninitialized Memory \u0026 Info-leak Analysis:\n- The added entries are static `struct xfrm_algo_desc` definitions in `.data` / `.rodata` where unspecified fields are zero-initialized by the compiler.\n- No dynamic memory allocation, stack variable handling, structure padding exposure, or netlink / `copy_to_user` data transfers are introduced or modified.\n- No control flow or bounds checking logic is changed that could cause reads of uninitialized memory.\n\n2. KASAN vs KMSAN applicability:\n- Any memory safety issues related to cipher contexts, skcipher crypto operations, or XFRM packet processing (out-of-bounds access, buffer overruns, use-after-free) are detectable by standard KASAN.\n- There are no KMSAN-specific uninitialized memory risks that justify a dedicated KMSAN fuzzing session.",
"NeedsKMSAN": false
} |
| Total Calls | Total Tokens | Avg Tokens | Total Duration (Seconds) | Avg Duration (Seconds) |
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| Total Calls | Total Duration (Seconds) | Avg Duration (Seconds) |
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