CVE-2026-64344

Summary

In the Linux kernel, the following vulnerability has been resolved:

USB: idmouse: fix use-after-free on disconnect race

mutex_unlock() may access the mutex structure after releasing the lock and therefore cannot be used to manage lifetime of objects directly (unlike spinlocks and refcounts). [1][2]

Use a kref to release the driver data to avoid use-after-free in mutex_unlock() when release() races with disconnect().

[1] a51749ab34d9 ("locking/mutex: Document that mutex_unlock() is non-atomic") [2] 2b9d9e0a9ba0 ("locking/mutex: Clarify that mutex_unlock(), and most other sleeping locks, can still use the lock object after it's unlocked")

Affected Software

VendorProductVersion RangeStatus
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < 31e75fed8f90cfea9f8285e7ed135b0e452bf872affected
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < 8d53b14ad4ccbff6d306b3a39c812303f4a87d41affected
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < f62622e947f82a3854a8502d09492ffbdeb252b4affected
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < 60fc5ef4ecea3e3d1fe556cecf53ddd13096ef09affected
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < d0f61acb51a8c8f3fd41c303ddb7770cd83e7ed4affected
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < 54c2b7356b4aeea467f9fb13b85e9e036bc428cbaffected
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < e88cff5fbaa629f3cab45c8b46f395d62c2eb515affected
LinuxLinux54d2bc068fd21bcb096660938bce7c7265613a24 < ff002c153f9722caece3983cc23dc4d9d4652cb4affected
LinuxLinux2.6.24affected
LinuxLinux0 < 2.6.24unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.96 <= 6.12.*unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc3 <= *unaffected

Weaknesses

References