SB20260507175 - Out-of-bounds read in Linux kernel iwlwifi fw driver
Published: May 7, 2026
Security Bulletin ID
SB20260507175
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) Out-of-bounds read (CVE-ID: CVE-2026-43172)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/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 an out-of-bounds read in the SMEM parsing logic when processing firmware-reported LMAC configuration data. A local user can provide crafted firmware data to cause a denial of service.
Exploitation requires the firmware to report three LMACs, a condition that does not exist in hardware.
Remediation
Install update from vendor's website.