{"id":"CVE-2023-4389","details":"A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.","modified":"2026-03-13T07:44:40.886117Z","published":"2023-08-16T19:15:10.163Z","related":["SUSE-SU-2023:4030-1","SUSE-SU-2023:4035-1","SUSE-SU-2023:4057-1","SUSE-SU-2023:4058-1","SUSE-SU-2023:4071-1","SUSE-SU-2023:4072-1","SUSE-SU-2023:4072-2","SUSE-SU-2023:4093-1","SUSE-SU-2023:4095-1","SUSE-SU-2023:4142-1"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-4389"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2219271"},{"type":"FIX","url":"https://patchwork.kernel.org/project/linux-btrfs/patch/20220324134454.15192-1-baijiaju1990@gmail.com/"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-4389.json","unresolved_ranges":[{"events":[{"introduced":"5.7"},{"fixed":"5.10.112"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.15.35"}]},{"events":[{"introduced":"5.16"},{"fixed":"5.17.4"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}]}