Race condition in Linux kernel - CVE-2026-80851
Published: September 5, 2026
Vulnerability identifier: #VU147074
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80851
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 denial of service.
The vulnerability exists due to a race condition in the GTP PDP context deletion paths when concurrently deleting a PDP context through GTP_CMD_DELPDP and network device unregistration. A local user can invoke concurrent GTP_CMD_DELPDP and RTM_DELLINK operations to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-80851
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/1e995498d29784a06a2b2899370a1926cfc8410d
- https://git.kernel.org/stable/c/3d950e98f74af9611925a5226edced02155f6ed1
- https://git.kernel.org/stable/c/498386b6d402737db1e2eeed4c385acbf0ef9e34
- https://git.kernel.org/stable/c/5f77ddb2756340c1b05381674ca025d52998005e
- https://git.kernel.org/stable/c/6df4f05bc2991467939d7d80b6f7e121559cc3df