CVE-2026-64344

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

HIGH

7.8

CVSS Score

Published: July 25, 2026 at 08:50 AM UTC

Updated: September 3, 2026 at 04:24 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.1%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.24 ≤ v < 5.10.2612.6.24 ≤ v < 5.15.2122.6.24 ≤ v < 6.1.1782.6.24 ≤ v < 6.12.962.6.24 ≤ v < 6.18.392.6.24 ≤ v < 6.6.1452.6.24 ≤ v < 7.1.42.6.24 ≤ v < 7.22.6.24.1 ≤ v < 5.10.2615.11 ≤ v < 5.15.2125.16 ≤ v < 6.1.1786.13 ≤ v < 6.18.396.19 ≤ v < 7.1.46.2 ≤ v < 6.6.1456.7 ≤ v < 6.12.962.6.24 2.6.24 rc2 2.6.24 rc3 2.6.24 rc4 2.6.24 rc5 2.6.24 rc6 2.6.24 rc7 2.6.24 rc854d2bc068fd21bcb096660938bce7c7265613a247.2 rc1 7.2 rc2

Vendor states this is fixed in 31e75fed8f90cfea9f8285e7ed135b0e452bf872 (fixed)

Vendor states this is fixed in 54c2b7356b4aeea467f9fb13b85e9e036bc428cb (fixed)

Vendor states this is fixed in 60fc5ef4ecea3e3d1fe556cecf53ddd13096ef09 (fixed)

Vendor states this is fixed in 8d53b14ad4ccbff6d306b3a39c812303f4a87d41 (fixed)

Vendor states this is fixed in d0f61acb51a8c8f3fd41c303ddb7770cd83e7ed4 (fixed)

Vendor states this is fixed in e88cff5fbaa629f3cab45c8b46f395d62c2eb515 (fixed)

Vendor states this is fixed in f62622e947f82a3854a8502d09492ffbdeb252b4 (fixed)

Vendor states this is fixed in ff002c153f9722caece3983cc23dc4d9d4652cb4 (fixed)

Vendor states this is fixed in 2.6.24 (unaffected)

Vendor states this is fixed in 5.10.261 (unaffected)

Vendor states this is fixed in 5.15.212 (unaffected)

Vendor states this is fixed in 6.1.178 (unaffected)