CVE-2025-21631 | Linux Kernel up to 6.1.124/6.6.71/6.12.9/6.13-rc6 block bfq_split_bfqq use after free

CVE-2025-21631 | Linux Kernel up to 6.1.124/6.6.71/6.12.9/6.13-rc6 block bfq_split_bfqq use after free

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.1.124/6.6.71/6.12.9/6.13-rc6. This issue affects the function bfq_split_bfqq of the component block. The manipulation leads to use after free. The identification of this vulnerability is CVE-2025-21631. The attack needs to be done within the local network. There is no exploit available. It is recommended to upgrade the affected component.