CVE-2021-47379 | Linux Kernel up to 5.4.149/5.10.69/5.14.8 blk-cgroup bfq_io_set_weight_legacy use after free

A vulnerability has been found in Linux Kernel up to 5.4.149/5.10.69/5.14.8 and classified as problematic. Affected by this vulnerability is the function bfq_io_set_weight_legacy of the component blk-cgroup. The manipulation leads to use after free.

This vulnerability is known as CVE-2021-47379. The attack can only be done within the local network. There is no exploit available.

It is recommended to upgrade the affected component.