SB2026062565 - Improper Check for Unusual or Exceptional Conditions in Linux kernel brcm80211 brcmfmac driver
Published: June 25, 2026
Security Bulletin ID
SB2026062565
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 Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-53093)
CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions
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 check for exceptional conditions in brcmf_chip_recognition() in the brcmfmac driver when processing error returns from brcmf_chip_add_core(). A local user can trigger the vulnerable code path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2e0e5a43ed126f896a4ad31ade66c90270601bae
- https://git.kernel.org/stable/c/334c68750eee84c2327db1d152be83ff5ad8e20b
- https://git.kernel.org/stable/c/99ef547659178eef6d6ba4738a9d989ce90cf909
- https://git.kernel.org/stable/c/a3b45090a91e2f0b9715870d8f8d9ca2fdfbc1af
- https://git.kernel.org/stable/c/bd6c906e0c4af6d5d0c49c3c4ee090b4913da17d
- https://git.kernel.org/stable/c/cbea71b4480394708f9a6e007a0385acfe5e1ec8
- https://git.kernel.org/stable/c/d3f280be48f1c672cb10e8026c236d0cca60048a
- https://git.kernel.org/stable/c/dd8592fc6007a451c3e4b9025de365e39de8178a