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CVE-2026-46180

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a; affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before df2e90d6a9955510f24f1dada78cfc439fd9fa88; affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before d616bb10de79e5c2bd8a24230a1128aeaf715615; affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before ed4168d1a50fef5be8eca947fbbf05a28507d265; affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before d16827cb1d3936f7627d0da6044483f743ebde03; affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before 658d2e46c2e9a8eb9b80c5e803ce3c89885b3366; affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before 908b92231e1ded53e43fcfad5e0704d83e1b803c; affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 before c623b63580880cc742255eaed3d79804c1b91143
Linux / Linuxaffected 3.3; unaffected 0 before 3.3; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.88 through 6.12.*; unaffected 6.18.30 through 6.18.*; unaffected 7.0.7 through 7.0.*; unaffected 7.1 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

siemens-SADP

No English description supplied.