{"id":"CVE-2017-18224","details":"In the Linux kernel before 4.15, fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode, which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.","modified":"2026-03-15T22:17:27.333787Z","published":"2018-03-12T03:29:00.260Z","related":["SUSE-SU-2018:3589-1","SUSE-SU-2018:3593-1","SUSE-SU-2018:3934-1","SUSE-SU-2018:3961-1","SUSE-SU-2018:4069-1","SUSE-SU-2018:4072-1"],"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/103353"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4188"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"4.15"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-18224.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}