SB2025120464 - NULL pointer dereference in Linux kernel openvswitch
Published: December 4, 2025
Security Bulletin ID
SB2025120464
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2025-40254)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the net/openvswitch/flow_netlink.h. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0b903f33c31c82b1c3591279fd8a23893802b987
- https://git.kernel.org/stable/c/3415faa1fcb4150f29a72c5ecf959339d797feb7
- https://git.kernel.org/stable/c/4689ba45296dbb3a47e70a1bc2ed0328263e48f3
- https://git.kernel.org/stable/c/9c61d8fe1350b7322f4953318165d6719c3b1475
- https://git.kernel.org/stable/c/dfe28c4167a9259fc0c372d9f9473e1ac95cff67