CVE-2026-64340In the Linux kernel, the following vulnerability has been resolved: USB: legousbtower: fix use-after-free on disconnect race mutex_unlock() may access the mutex structure after releasing the lock and…
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In the Linux kernel, the following vulnerability has been resolved: USB: legousbtower: 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")
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Sep 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 2.6.25 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39; from 6.19 before 7.1.4; 7.2; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/0b57e5ddbd89df3bc367463de3d2ca66f99a1a5epatch
- https://git.kernel.org/stable/c/11d069f85851997b4ea0adf242ed9672dc749b8fpatch
- https://git.kernel.org/stable/c/62fc8eb1b1481051f7bab4aa93d79809053dd09fpatch
- https://git.kernel.org/stable/c/6462de75d2e370c7e74dcfb7b4ae79eb5a6a55eepatch
- https://git.kernel.org/stable/c/766738ecf2b819e54d38763c8d1c8ae6cff14b39patch
- https://git.kernel.org/stable/c/9ba62966461a8e3cc593b62c56ec62eb2d80436dpatch
- https://git.kernel.org/stable/c/ab2bfd7bec4f134b377ec42f513e90c35db94160patch
- https://git.kernel.org/stable/c/b4222c05066b252b451f9c8c4730b5b60824ea66patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.