Vulnerability Description
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).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.12, <= 6.1.4 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caPatchVendor 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 ListThird Party Advisory
- https://www.openwall.com/lists/oss-security/2023/01/10/4Mailing ListThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caPatchVendor 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 ListThird Party Advisory
- https://www.openwall.com/lists/oss-security/2023/01/10/4Mailing ListThird Party Advisory
FAQ
What is CVE-2023-23454?
CVE-2023-23454 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 someti...
How severe is CVE-2023-23454?
CVE-2023-23454 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-23454?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.