CVE-2023-6040: debian linux Out-of-bounds Read — Fix

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.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

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	All

References

Advisories & Patches

http://www.openwall.com/lists/oss-security/2024/01/12/1 http://www.openwall.com/lists/oss-security/2024/01/12/1

Other References

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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-6040? +

CVE-2023-6040 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-6040? +

CVE-2023-6040 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6040? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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