Bug 2482616 (CVE-2026-46180) - CVE-2026-46180 kernel: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task
Summary: CVE-2026-46180 kernel: wifi: brcmfmac: Fix potential use-after-free issue whe...
Keywords:
Status: NEW
Alias: CVE-2026-46180
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-28 11:06 UTC by OSIDB Bzimport
Modified: 2026-05-28 14:41 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-28 11:06:00 UTC 
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().
Comment 1 Keith Grant 2026-05-28 14:40:45 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052829-CVE-2026-46180-d14b@gregkh/T
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