CVE-2026-46180
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 versions
Linux kernel versions
3.3
and later are affected. Fixed in
6.6.140,
6.12.88,
6.18.30,
7.0.7,
7.1-rc3
and their respective stable series.
References
The following references provide additional information about CVE-2026-46180 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
-
PatchKernel patch commithttps://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c
-
PatchKernel patch commithttps://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143
Frequently asked questions
-
What is CVE-2026-46180?
CVE-2026-46180 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.3 onward and has been patched in 6.6.140, 6.12.88, 6.18.30 and others. CVE-2026-46180 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-46180?
Yes — CVE-2026-46180 has been patched. Fixed versions include 6.6.140, 6.12.88, 6.18.30 and others. If you are running Linux kernel 3.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-46180 actively exploited?
No — CVE-2026-46180 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.