Race condition in Linux kernel - CVE-2026-31678
Published: April 25, 2026
Vulnerability identifier: #VU127871
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-31678
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in the openvswitch tunnel device destruction path when destroying a tunnel vport after device unregistration. A local user can trigger concurrent access to a detached device reference to cause a denial of service.
How to mitigate CVE-2026-31678
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/42f0d3d81209654c08ffdde5a34b9b92d2645896
- https://git.kernel.org/stable/c/6931d21f87bc6d657f145798fad0bf077b82486c
- https://git.kernel.org/stable/c/98b726ab5e2a4811e27c28e4d041f75bba147eab
- https://git.kernel.org/stable/c/9d56aced21fb9c104e8a3f3be9b21fbafe448ffc
- https://git.kernel.org/stable/c/b8c56a3fc5d879c0928f207a756b0f067f06c6a8
- https://git.kernel.org/stable/c/bbe7bd722bfaea36aab3da6cc60fb4a05c644643