{"id":"CVE-2021-31916","details":"An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.","aliases":["A-187955767","PUB-A-187955767"],"modified":"2026-03-13T04:54:00.108959Z","published":"2021-05-06T17:15:08.143Z","related":["ALSA-2021:4356","SUSE-SU-2021:3806-1","SUSE-SU-2021:3807-1","SUSE-SU-2021:3848-1","SUSE-SU-2021:3876-1","SUSE-SU-2021:3877-1","SUSE-SU-2021:3929-1","SUSE-SU-2021:3933-1","SUSE-SU-2021:3935-1","SUSE-SU-2021:3941-1","SUSE-SU-2021:3969-1","SUSE-SU-2021:3972-1","SUSE-SU-2021:3978-1","SUSE-SU-2021:3979-1","SUSE-SU-2021:3992-1","openSUSE-SU-2021:1501-1","openSUSE-SU-2021:3806-1","openSUSE-SU-2021:3876-1","openSUSE-SU-2021:3941-1"],"references":[{"type":"ADVISORY","url":"https://seclists.org/oss-sec/2021/q1/268"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1946965"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.12"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-31916.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}