A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel’s filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service.
https://www.debian.org/security/2022/dsa-5257
https://ubuntu.com/security/CVE-2022-1184
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html