{"id":"CVE-2017-5669","details":"The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.","modified":"2026-03-15T14:25:18.840649Z","published":"2017-02-24T15:59:00.150Z","related":["SUSE-SU-2017:1247-1","SUSE-SU-2017:1301-1","SUSE-SU-2017:1360-1","SUSE-SU-2017:2342-1","SUSE-SU-2017:2525-1"],"references":[{"type":"ADVISORY","url":"https://usn.ubuntu.com/3583-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3583-2/"},{"type":"ADVISORY","url":"http://www.debian.org/security/2017/dsa-3804"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/96754"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1037918"},{"type":"FIX","url":"https://bugzilla.kernel.org/show_bug.cgi?id=192931"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"4.11"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"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-2017-5669.json"}}],"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:H/A:H"}]}