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CVE-2026-46180

wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.140, 6.12.88, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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().

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a; From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in df2e90d6a9955510f24f1dada78cfc439fd9fa88; From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in d616bb10de79e5c2bd8a24230a1128aeaf715615; From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in ed4168d1a50fef5be8eca947fbbf05a28507d265; From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in d16827cb1d3936f7627d0da6044483f743ebde03; From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in 658d2e46c2e9a8eb9b80c5e803ce3c89885b3366; From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in 908b92231e1ded53e43fcfad5e0704d83e1b803c; From a9ffda88be7416b8336f644806c2b3ed3ce08b26 · fixed in c623b63580880cc742255eaed3d79804c1b91143

  • Linux Linux

    3.3

  • KernelLinux

    From 3.3.0 · fixed in 5.10.259; From 5.11.0 · fixed in 5.15.210; From 5.16.0 · fixed in 6.1.176; From 6.2.0 · fixed in 6.6.140; From 6.7.0 · fixed in 6.12.88; From 6.13.0 · fixed in 6.18.30; From 6.19.0 · fixed in 7.0.7

References 8

git.kernel.org