CVE-2023-6040

Name: CVE-2023-6040
Creator: NVD / NIST
Published: 2024-01-12T02:15:44.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2023-6040 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.31%

22.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.16, < 4.19.305
Linux	Linux Kernel	>= 4.20, < 5.4.267
Linux	Linux Kernel	>= 5.5, < 5.10.208
Linux	Linux Kernel	>= 5.11, < 5.15.147
Linux	Linux Kernel	>= 5.16, < 5.18
Debian	Debian Linux	10.0

References

http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.htmlThird Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2024/01/12/1Mailing List, Patch, Third Party Advisory
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6040Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2024/01/12/1Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.htmlThird Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2024/01/12/1Mailing List, Patch, Third Party Advisory
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6040Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2024/01/12/1Mailing List, Third Party Advisory

Timeline

Published: Jan 12, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-6040?

How severe is CVE-2023-6040?

CVE-2023-6040 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2023-6040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-6040?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST