CVE-2026-46180

HIGH

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

Title source: cna
STIX 2.1

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().

Scores

CVSS v3 7.8
EPSS 0.0013
EPSS Percentile 3.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (15)
Linux/Linux < 3.3
Linux/Linux 3.3
Linux/Linux 6.12.88 - 6.12.*
Linux/Linux 6.18.30 - 6.18.*
Linux/Linux 6.6.140 - 6.6.*
Linux/Linux 7.0.7 - 7.0.*
Linux/Linux 7.1
Linux/Linux 7.1-rc3
Linux/Linux a9ffda88be7416b8336f644806c2b3ed3ce08b26 - 658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
Linux/Linux a9ffda88be7416b8336f644806c2b3ed3ce08b26 - 908b92231e1ded53e43fcfad5e0704d83e1b803c
... and 5 more
Published May 28, 2026
Tracked Since May 28, 2026