Race condition in Linux kernel - CVE-2026-74475
Published: August 16, 2026
Vulnerability identifier: #VU143302
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74475
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to a race condition in route_shortcircuit() in the VXLAN implementation when processing neighbour hardware addresses. A local attacker can trigger concurrent updates to cause a denial of service.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-74475
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External References
- https://git.kernel.org/stable/c/05f2987f73daa05333fd713d05546142f9f7c5f0
- https://git.kernel.org/stable/c/8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d
- https://git.kernel.org/stable/c/d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0
- https://git.kernel.org/stable/c/ec341bb76d77b4c2948764375ee6bfeef4bb41c3
- https://git.kernel.org/stable/c/ff89415d34c3ab9f5312316423122e664ed3524f