CVE-2026-64341

In the Linux kernel, the following vulnerability has been resolved:

USB: iowarrior: 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")