CVE-2026-64340

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.2:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.2:rc2::::::

History

No history.

Information

Published : 2026-07-25 10:17

Updated : 2026-09-03 16:01

NVD link : CVE-2026-64340

Mitre link : CVE-2026-64340

CVE.ORG link : CVE-2026-64340

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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