{"id":"CVE-2021-3348","details":"nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.","modified":"2026-04-16T04:39:19.346029569Z","published":"2021-02-01T04:15:14.430Z","related":["ALSA-2021:4356","SUSE-SU-2021:0347-1","SUSE-SU-2021:0354-1","SUSE-SU-2021:0427-1","SUSE-SU-2021:0433-1","SUSE-SU-2021:0434-1","SUSE-SU-2021:0438-1","SUSE-SU-2021:0532-1","SUSE-SU-2021:0739-1","SUSE-SU-2021:0742-1","openSUSE-SU-2021:0241-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2021/02/01/1"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258"},{"type":"FIX","url":"https://www.openwall.com/lists/oss-security/2021/01/28/3"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3348.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.10.12"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}