CVE-2023-6040 — An out-of-bounds access vulnerability involving netfilter was reported and fixed
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_
Published
2024-01-12T01:37:45.387Z
Last modified
2025-06-17T21:09:18.328Z
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
01What is this vulnerability?
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.
02Affected products
| Vendor | Product | Versions |
|---|
| The Linux Kernel Organization | linux | 0 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2024-01-12T01:37:45.387Z
- Last modified: 2025-06-17T21:09:18.328Z
09References
- cve.mitre.org — https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6040
- www.openwall.com — https://www.openwall.com/lists/oss-security/2024/01/12/1
- www.openwall.com — http://www.openwall.com/lists/oss-security/2024/01/12/1
- packetstormsecurity.com — http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LS…
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
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