Out-of-bounds Read in Linux Kernel
CVE-2023-6040
An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family); While creating a new netfilter table, lack of a safeguard against invalid nf_tables family (pf) values within `nf_tables_newtable` function enables an attacker to achieve out-of-bounds access.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (21.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Linux Kernel
- The Linux Kernel Organization — versions 0
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve.mitre.org/cgi-bin/cvename.cgi (issue-tracking, Third Party Advisory)
- www.openwall.com/lists/oss-security/2024/01/12/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2024/01/12/1 (Patch, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100… (VDB Entry, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2024/06/msg00016.html (Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2024/06/msg00020.html (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-6040?
- CVE-2023-6040 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2024-01-12.
- How severe is CVE-2023-6040?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-6040 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.