Race condition in Linux kernel - CVE-2026-89667
Published: September 12, 2026
Vulnerability identifier: #VU149133
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89667
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a resource leak.
The vulnerability exists due to a race condition in the nfsd file cache when file disposal occurs concurrently with per-network shutdown. A local user can trigger concurrent file disposal and per-network shutdown to cause a resource leak.
Affected software
Linux kernel
How to mitigate CVE-2026-89667
Install security update from vendor's repository.