CVE-2025-21840 | Linux Kernel up to 6.13.3/6.14-rc2 Netlink Attribute memory corruption

A vulnerability has been found in Linux Kernel up to 6.13.3/6.14-rc2 and classified as critical. This vulnerability affects unknown code of the component Netlink Attribute Handler. The manipulation leads to memory corruption.

This vulnerability was named CVE-2025-21840. The attack can only be initiated within the local network. There is no exploit available.

It is recommended to upgrade the affected component.