CVE-2025-21809 | Linux Kernel up to 6.12.12/6.13.1 rxrpc_peer data authenticity

A vulnerability was found in Linux Kernel up to 6.12.12/6.13.1. It has been declared as problematic. Affected by this vulnerability is the function rxrpc_peer. The manipulation leads to insufficient verification of data authenticity.

This vulnerability is known as CVE-2025-21809. The attack can only be done within the local network. There is no exploit available.

It is recommended to upgrade the affected component.