CVE-2025-21703 | Linux Kernel up to 6.6.77/6.12.13/6.13.2/6.14-rc1 netem qdisc_tree_reduce_backlog use after free (Nessus ID 232711 / WID-SEC-2025-0411)
A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.6.77/6.12.13/6.13.2/6.14-rc1. This impacts the function qdisc_tree_reduce_backlog of the component netem. The manipulation leads to use after free.
This vulnerability is traded as CVE-2025-21703. Access to the local network is required for this attack to succeed. There is no exploit available.
It is advisable to upgrade the affected component.