CVE-2021-46958 | Linux Kernel up to 5.10.35/5.11.19/5.12/5.12.2 btrfs /dev/mapper/error-test btrfs_sync_log use after free (Nessus ID 245559)

A vulnerability marked as critical has been reported in Linux Kernel up to 5.10.35/5.11.19/5.12/5.12.2. Affected by this issue is the function btrfs_sync_log of the file /dev/mapper/error-test of the component btrfs. Performing a manipulation results in use after free. This vulnerability is reported as CVE-2021-46958. The attack requires a local approach. No exploit exists. It is suggested to upgrade the affected component.