CVE-2026-46180
High
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().
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMay 28, 2026
First seenMay 28, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel6.6.140, 6.12.88, 6.18.30, 7.0.7 or later
Patches
- git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
- git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c
- git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143
- git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03
- git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.3 ≤ v < 6.6.140, 6.7 ≤ v < 6.12.88, 6.13 ≤ v < 6.18.30, 6.19 ≤ v < 7.0.7, 7.1 | 6.6.140, 6.12.88, 6.18.30, 7.0.7 |
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