CVE-2026-46180

Description

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().

References

• https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
• https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c
• https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143
• https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03
• https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265