Race condition in Linux kernel - CVE-2026-80885
Published: September 6, 2026
Vulnerability identifier: #VU147200
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80885
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to trigger processing of out-of-band messages after a network namespace is no longer live.
The vulnerability exists due to improper synchronization in the AFS RxRPC out-of-band message handler when processing queued RxRPC out-of-band messages during network namespace teardown. A remote attacker can send an RxRPC out-of-band message to trigger processing after the namespace is no longer live.
Affected software
Linux kernel
How to mitigate CVE-2026-80885
Install security update from vendor's repository.