Use-after-free in Linux kernel - CVE-2026-90343
Published: September 18, 2026
Vulnerability identifier: #VU151148
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90343
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-90343
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3