{"id":"CVE-2019-19813","details":"In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.","modified":"2026-03-15T22:28:05.284099Z","published":"2019-12-17T06:15:12.780Z","references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200103-0001/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4414-1/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html"},{"type":"EVIDENCE","url":"https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.0.21"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"9.5"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19813.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}