CVE-2025-21689 | Linux Kernel up to 6.13.0 quatech2 qt2_process_read_urb null pointer dereference

A vulnerability classified as critical was found in Linux Kernel up to 6.13.0. This vulnerability affects the function qt2_process_read_urb of the component quatech2. The manipulation leads to null pointer dereference.

This vulnerability was named CVE-2025-21689. The attack needs to be approached within the local network. There is no exploit available.

It is recommended to upgrade the affected component.