CVE-2026-46180
Published: May 29, 2026Last modified: June 2, 2026
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().
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.170-r0) |
| 25 LTS | linux-lts | Fixed (6.12.92-r0) | |
| Stream | linux-lts | Fixed (6.12.92-r0) |
References
- https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
- https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c
- https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143
- https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03
- https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265