wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task
Watchdog task might end between send_sig() and kthread_stop() calls, what
results in the use-after-free issue. Fix this by increasing watchdog task
reference count before calling send_sig() and dropping it by switching to
kthread_stop_put().
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803chttps://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5ahttps://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265