7.8

CVE-2026-64340

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

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")
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.25 < 5.10.261
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.212
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.178
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.145
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.96
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.39
Linux ≫ Linux Kernel Version >= 6.19 < 7.1.4
Linux ≫ Linux Kernel Version 7.2 Update rc1
Linux ≫ Linux Kernel Version 7.2 Update rc2
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.075
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/11d069f85851997b4ea0adf242ed9672dc749b8f
Patch
https://git.kernel.org/stable/c/b4222c05066b252b451f9c8c4730b5b60824ea66
Patch
https://git.kernel.org/stable/c/6462de75d2e370c7e74dcfb7b4ae79eb5a6a55ee
Patch
https://git.kernel.org/stable/c/0b57e5ddbd89df3bc367463de3d2ca66f99a1a5e
Patch
https://git.kernel.org/stable/c/ab2bfd7bec4f134b377ec42f513e90c35db94160
Patch
https://git.kernel.org/stable/c/766738ecf2b819e54d38763c8d1c8ae6cff14b39
Patch
https://git.kernel.org/stable/c/9ba62966461a8e3cc593b62c56ec62eb2d80436d
Patch
https://git.kernel.org/stable/c/62fc8eb1b1481051f7bab4aa93d79809053dd09f
Patch