In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.Referenceshttps://bugzilla.kernel.org/show_bug.cgi?id=214655https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050https://www.openwall.com/lists/oss-security/2022/03/17/2https://www.openwall.com/lists/oss-security/2022/03/17/1https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3https://security.netapp.com/advisory/ntap-20220419-0003/
