CVE-2023-23454

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).

• CWE-843
• CWE-843

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caa4b35b4317d5147b3ab0fbdc9c075c7d2e9c12Patch, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://www.debian.org/security/2023/dsa-5324Third Party Advisory
• https://www.openwall.com/lists/oss-security/2023/01/10/1Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2023/01/10/4Mailing List, Third Party Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caa4b35b4317d5147b3ab0fbdc9c075c7d2e9c12Patch, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://www.debian.org/security/2023/dsa-5324Third Party Advisory
• https://www.openwall.com/lists/oss-security/2023/01/10/1Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2023/01/10/4Mailing List, Third Party Advisory

Published

Jan 12, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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