Description
In the Linux kernel, the following vulnerability has been resolved: USB: ldusb: 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 products
linux: linux kernel
References8
- git.kernel.org/stable/c/02ca08fff74cf9b0a3c4d2cacde1c6edeeb95bb4 Patch
- git.kernel.org/stable/c/19bdfc7b3c179331eafa423d87e1336f43bbfeb8 Patch
- git.kernel.org/stable/c/2107a4fc8ff1cf1d52f416c1e5cc8e97413a5915 Patch
- git.kernel.org/stable/c/a3e794136ab5e3ad1e7019175a4b837aec86db4b Patch
- git.kernel.org/stable/c/af59829e67e11ba2511a9f8e4b9111afc7d1f550 Patch
- git.kernel.org/stable/c/d8f69404e1d671326f86d378b9f5bfbd56490e9d Patch
- git.kernel.org/stable/c/e5a9bdce4bfd3e2226b5f3df5fb8385d6935ee69 Patch
- git.kernel.org/stable/c/fc55923a972e715f9a27187b47d4920709e23d85 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 14 November 2026
- CWE
- CWE-416
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