CVE-2026-53389 | Linux Kernel up to 6.12.94/6.18.37/7.1.2 Tcp Ao net/tcp_ao.c tcp_ao_delete_key use after free (WID-SEC-2026-2403)

A vulnerability was found in Linux Kernel up to 6.12.94/6.18.37/7.1.2. It has been declared as very critical. This issue affects the function tcp_ao_delete_key of the file net/tcp_ao.c of the component Tcp Ao. Such manipulation leads to use after free. This vulnerability is referenced as CVE-2026-53389. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.