SB2025091657 - Memory leak in Linux kernel brcm80211 brcmfmac driver
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091657
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2022-50321)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the brcmf_netdev_start_xmit() function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/212fde3fe76e962598ce1d47b97cc78afdfc71b3
- https://git.kernel.org/stable/c/3a4d18318f473e97d628f410215b3fac32d07aed
- https://git.kernel.org/stable/c/4c55fdebc1c358de96bfab52ed309d58a3ba66ef
- https://git.kernel.org/stable/c/7f159116d620615779adbf88a5d94713702216d8
- https://git.kernel.org/stable/c/d869a189505224601e310c7769cb90b0e2f60b31
- https://git.kernel.org/stable/c/e08e6812efb6a8c676e733de0518594d1517e0d9
- https://git.kernel.org/stable/c/e5d01e85cf46628647cd696cb72ba4659b18967f
- https://git.kernel.org/stable/c/e8ef89e5b89ee041a94eecfb6c31fcc237f9168c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.99