SB20260918335 - Use-after-free in Linux kernel wireless
Published: September 18, 2026
Security Bulletin ID
SB20260918335
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-90343)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local privileged user to trigger a use-after-free condition.
The vulnerability exists due to use-after-free in cfg80211 PMSR request teardown when stopping a P2P device or NAN interface with a pending PMSR request. A local privileged user can stop a P2P device or NAN interface while a PMSR request is pending to trigger a use-after-free condition.
The stale request can be used when the driver later reports a result.
Remediation
Install update from vendor's website.