CVE-2025-21642 | Linux Kernel up to 6.6.71/6.12.9/6.13-rc6 sysctl null pointer dereference

A vulnerability was found in Linux Kernel up to 6.6.71/6.12.9/6.13-rc6. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component sysctl. The manipulation leads to null pointer dereference.

This vulnerability is known as CVE-2025-21642. Access to the local network is required for this attack to succeed. There is no exploit available.

It is recommended to upgrade the affected component.