7.8

CVE-2026-46180

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

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().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.3 < 6.6.140
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.88
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.30
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.7
Linux ≫ Linux Kernel Version7.1 Updaterc1
Linux ≫ Linux Kernel Version7.1 Updaterc2
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.032
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265
Patch
https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03
Patch
https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
Patch
https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c
Patch
https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143
Patch