CVE-2025-21745 | Linux Kernel up to 6.1.128/6.6.77/6.12.13/6.13.2 blk-cgroup blkcg_fill_root_iostats reference count (Nessus ID 233595 / WID-SEC-2025-0453)
A vulnerability classified as critical was found in Linux Kernel up to 6.1.128/6.6.77/6.12.13/6.13.2. Affected by this vulnerability is the function blkcg_fill_root_iostats of the component blk-cgroup. Executing a manipulation can lead to improper update of reference count.
This vulnerability is tracked as CVE-2025-21745. The attack is only possible within the local network. No exploit exists.
Upgrading the affected component is advised.