SB20260507209 - Improper Initialization in Linux kernel brcm80211 brcmfmac driver
Published: May 7, 2026
Security Bulletin ID
SB20260507209
CSH 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 vulnerability.
1) Improper Initialization (CVE-ID: CVE-2026-43144)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper initialization in the brcmfmac sdio device probe and removal handling when cleaning up after a failed probe. A local user can trigger a device probe failure to cause a denial of service.
The issue can occur when device initialization fails, such as in cases of missing firmware.
Remediation
Install update from vendor's website.