Buffer overflow in Linux Kernel
CVE-2023-31436
qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.
Vulnerability class: Buffer Overflow
EPSS: 0.006 (45.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Patch)
- cve@mitre.org (Patch, Mailing List)
- cve@mitre.org (Patch, Mailing List)
- cve@mitre.org (vendor-advisory, VDB Entry)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory)
- cve@mitre.org
Frequently asked questions
- What is CVE-2023-31436?
- CVE-2023-31436 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-04-28.
- How severe is CVE-2023-31436?
- High severity. CVSS v3 base score is 7.8 out of 10.