{"id":"CVE-2021-3923","details":"A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it can be further used to defeat existing kernel protection mechanisms.","modified":"2026-03-13T05:07:26.486304Z","published":"2023-03-27T21:15:09.980Z","related":["SUSE-SU-2023:1800-1","SUSE-SU-2023:1801-1","SUSE-SU-2023:1803-1","SUSE-SU-2023:1811-1","SUSE-SU-2023:1848-1","SUSE-SU-2023:1892-1","SUSE-SU-2023:1894-1","SUSE-SU-2023:2232-1"],"references":[{"type":"WEB","url":"https://lore.kernel.org/all/20220204100036.GA12348%40kili/"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2019643"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.15.14"}]},{"events":[{"introduced":"0"},{"last_affected":"6.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"37"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-3923.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:L/I:N/A:N"}]}