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…
Published Jan 12, 2023 · updated Oct 14, 2026 · linux linux kernel
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).
Code
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Timeline
Detection, updates, and resolution for this record.
Jan 12, 2023 · NIST NVD
Detected
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).
Oct 14, 2026 · NIST NVD
Updated
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).
Affected
- cpe debian/debian linux11.0
- cpe linux/linux kernelversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2023-23454
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2023-23454
30-day exploitation probability 0.3%
first.org - NIST NVDVulnerability recordCVE-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).
nvd.nist.gov