{"id":"CVE-2018-1092","details":"The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.","modified":"2026-04-16T01:38:51.996926524Z","published":"2018-04-02T03:29:00.230Z","related":["SUSE-SU-2018:1761-1","SUSE-SU-2018:1762-1","SUSE-SU-2018:1816-1","SUSE-SU-2018:1855-1","SUSE-SU-2018:1855-2","SUSE-SU-2018:2092-1"],"references":[{"type":"WEB","url":"https://usn.ubuntu.com/3677-2/"},{"type":"WEB","url":"https://usn.ubuntu.com/3678-4/"},{"type":"WEB","url":"https://usn.ubuntu.com/3676-1/"},{"type":"WEB","url":"https://usn.ubuntu.com/3677-1/"},{"type":"WEB","url":"https://usn.ubuntu.com/3678-2/"},{"type":"WEB","url":"https://usn.ubuntu.com/3678-3/"},{"type":"WEB","url":"https://usn.ubuntu.com/3754-1/"},{"type":"WEB","url":"https://usn.ubuntu.com/3678-1/"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html"},{"type":"WEB","url":"https://usn.ubuntu.com/3676-2/"},{"type":"ADVISORY","url":"http://openwall.com/lists/oss-security/2018/03/29/1"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3083"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4187"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4188"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2948"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3096"},{"type":"REPORT","url":"https://bugzilla.kernel.org/show_bug.cgi?id=199179"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1560777"},{"type":"REPORT","url":"https://bugzilla.kernel.org/show_bug.cgi?id=199275"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.15.15"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-1092.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}