CVE-2025-21897 | Linux Kernel up to 6.12.17/6.13.5 sched_ext pick_task_scx deadlock
A vulnerability has been found in Linux Kernel up to 6.12.17/6.13.5 and classified as critical. Affected by this vulnerability is the function pick_task_scx of the component sched_ext. The manipulation leads to deadlock.
This vulnerability is known as CVE-2025-21897. Access to the local network is required for this attack. There is no exploit available.
It is recommended to upgrade the affected component.