CVE-2026-46180

EUVD-2026-32807
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().
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 3%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
3.3 ≤
𝑥
< 6.6.140
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.88
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.30
linuxlinux_kernel
6.19 ≤
𝑥
< 7.0.7
linuxlinux_kernel
7.1:rc1
linuxlinux_kernel
7.1:rc2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.176-1
fixed
bookworm (security)
6.1.176-1
fixed
bullseye
vulnerable
bullseye (security)
5.10.259-1
fixed
forky
7.1.3-1
fixed
sid
7.1.3-1
fixed
trixie
6.12.94-1
fixed
trixie (security)
6.12.95-1
fixed
linux-6.1
bullseye (security)
6.1.176-1~deb11u1
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
kernel
Azure Linux 3.0
0:6.6.141.1-1.azl3
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c
https://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a
https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143
https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03
https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615
https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88
https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265