SB2025121068 - Use-after-free in Linux kernel brcm80211 brcmfmac driver
Published: December 10, 2025 Updated: December 12, 2025
Security Bulletin ID
SB2025121068
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-50678)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the brcmf_pno_set_random() function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1c12d47a9017a7745585b57b9b0fdc0d8c50978e
- https://git.kernel.org/stable/c/4d4dcfa6b4e85a878401f4fbae4cafc88cdcceb4
- https://git.kernel.org/stable/c/50e45034c5802cedbf5b707364ea76ace29ad984
- https://git.kernel.org/stable/c/56a0ac48634155d2b866b99fba7e1dd8df4e2804
- https://git.kernel.org/stable/c/75995ce1c926ee87bf93d58977c766b4e7744715
- https://git.kernel.org/stable/c/7ccb0529446ae68a8581916bfc95c353306d76ba
- https://git.kernel.org/stable/c/826405a911473b6ee8bd2aa891cb2f03a13efa17
- https://git.kernel.org/stable/c/aa666b68e73fc06d83c070d96180b9010cf5a960
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.296
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.262
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.150
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.75
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.220
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1