CVE-2025-21821 | Linux Kernel up to 6.1.128/6.6.78/6.12.15/6.13.3 fbdev usb_f_ecm buffer overflow (Nessus ID 233595 / WID-SEC-2025-0461)
A vulnerability was found in Linux Kernel up to 6.1.128/6.6.78/6.12.15/6.13.3. It has been classified as critical. This impacts the function usb_f_ecm of the component fbdev. The manipulation leads to buffer overflow.
This vulnerability is documented as CVE-2025-21821. The attack requires being on the local network. There is not any exploit available.
Upgrading the affected component is recommended.