6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Griffin Kroah-Hartman commit 2430eb81e44111b30eeb5273bbcf8b24ca517ef9 upstream. Change the kmalloc() calls in usb_mdc800_init() for irq_urb_buffer and download_urb_buffer to kzalloc(), avoiding potential stack leaks if a shorter message is received in mdc800_usb_irq() and mdc800_usb_download_notify() Assisted-by: gkh_clanker_t1000 Cc: stable Signed-off-by: Griffin Kroah-Hartman Link: https://patch.msgid.link/20260819-usb_misc_random-v1-1-43a0dcee3a32@kroah.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/image/mdc800.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/usb/image/mdc800.c +++ b/drivers/usb/image/mdc800.c @@ -1000,13 +1000,13 @@ static int __init usb_mdc800_init (void) mdc800->downloaded = 0; mdc800->written = 0; - mdc800->irq_urb_buffer=kmalloc (8, GFP_KERNEL); + mdc800->irq_urb_buffer=kzalloc (8, GFP_KERNEL); if (!mdc800->irq_urb_buffer) goto cleanup_on_fail; mdc800->write_urb_buffer=kmalloc (8, GFP_KERNEL); if (!mdc800->write_urb_buffer) goto cleanup_on_fail; - mdc800->download_urb_buffer=kmalloc (64, GFP_KERNEL); + mdc800->download_urb_buffer=kzalloc (64, GFP_KERNEL); if (!mdc800->download_urb_buffer) goto cleanup_on_fail;