{"id":"CVE-2018-18386","details":"drivers/tty/n_tty.c in the Linux kernel before 4.14.11 allows local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ.","modified":"2026-03-15T22:25:50.601541Z","published":"2018-10-17T20:29:00.550Z","related":["SUSE-SU-2018:3589-1","SUSE-SU-2018:3593-1","SUSE-SU-2018:3659-1","SUSE-SU-2018:3688-1","SUSE-SU-2018:3689-1","SUSE-SU-2018:3746-1","SUSE-SU-2018:3772-1","SUSE-SU-2018:3773-1","SUSE-SU-2018:3787-1","SUSE-SU-2018:3865-1","SUSE-SU-2018:3869-1","SUSE-SU-2018:3880-1","SUSE-SU-2018:3934-1","SUSE-SU-2018:3961-1","SUSE-SU-2018:4069-1","SUSE-SU-2018:4072-1","SUSE-SU-2019:0095-1","SUSE-SU-2019:0439-1","SUSE-SU-2019:1289-1","SUSE-SU-2019:13937-1"],"references":[{"type":"ADVISORY","url":"https://usn.ubuntu.com/3849-2/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0831"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3849-1/"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348"},{"type":"FIX","url":"https://bugzilla.suse.com/show_bug.cgi?id=1094825"},{"type":"FIX","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"4.14.11"}]},{"events":[{"introduced":"0"},{"last_affected":"12.04"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18386.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}