A vulnerability classified as critical has been found in Linux Kernel up to 6.1.124/6.6.71/6.12.9/6.13-rc6. Affected is an unknown function of the component sysctl. The manipulation leads to null pointer dereference.
This vulnerability is traded as CVE-2025-21639. The attack needs to be done within the local network. There is no exploit available.
It is recommended to upgrade the affected component.