{"id":"CVE-2023-23454","details":"cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).","modified":"2026-03-14T11:58:30.522116Z","published":"2023-01-12T07:15:08.193Z","related":["ALSA-2023:2736","ALSA-2023:2951","MGASA-2023-0007","MGASA-2023-0008","SUSE-SU-2023:0145-1","SUSE-SU-2023:0152-1","SUSE-SU-2023:0406-1","SUSE-SU-2023:0407-1","SUSE-SU-2023:0410-1","SUSE-SU-2023:0420-1","SUSE-SU-2023:0433-1","SUSE-SU-2023:0485-1","SUSE-SU-2023:0488-1","SUSE-SU-2023:0591-1","SUSE-SU-2023:0618-1","SUSE-SU-2023:0774-1","SUSE-SU-2023:1608-1","SUSE-SU-2023:1801-1","SUSE-SU-2023:1803-1","SUSE-SU-2023:1848-1","SUSE-SU-2023:2232-1","SUSE-SU-2023:2367-1","SUSE-SU-2023:2368-1","SUSE-SU-2023:2369-1","SUSE-SU-2023:2371-1","SUSE-SU-2023:2376-1","SUSE-SU-2023:2384-1","SUSE-SU-2023:2385-1","SUSE-SU-2023:2386-1","SUSE-SU-2023:2389-1","SUSE-SU-2023:2399-1","SUSE-SU-2023:2401-1","SUSE-SU-2023:2405-1","SUSE-SU-2023:2413-1","SUSE-SU-2023:2420-1","SUSE-SU-2023:2422-1","SUSE-SU-2023:2423-1","SUSE-SU-2023:2425-1","SUSE-SU-2023:2428-1","SUSE-SU-2023:2429-1","SUSE-SU-2023:2431-1","SUSE-SU-2023:2442-1","SUSE-SU-2023:2443-1","SUSE-SU-2023:2448-1","SUSE-SU-2023:2450-1","SUSE-SU-2023:2453-1","SUSE-SU-2023:2455-1","SUSE-SU-2023:2459-1","SUSE-SU-2023:2468-1","SUSE-SU-2023:2506-1","SUSE-SU-2023:2805-1","SUSE-SU-2023:2809-1","SUSE-SU-2023:4030-1","SUSE-SU-2023:4095-1"],"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5324"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2023/01/10/1"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2023/01/10/4"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caa4b35b4317d5147b3ab0fbdc9c075c7d2e9c12"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"2.6.12"},{"last_affected":"6.1.4"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-23454.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:N/I:N/A:H"}]}