CVE-2023-4569

Name: CVE-2023-4569
Creator: NVD / NIST
Published: 2023-08-28T22:15:10.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2023-4569 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A memory leak flaw was found in nft_set_catchall_flush in net/netfilter/nf_tables_api.c in the Linux Kernel. This issue may allow a local attacker to cause double-deactivations of catchall elements, which can result in a memory leak.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

A memory leak flaw was found in nft_set_catchall_flush in net/netfilter/nf_tables_api.c in the Linux Kernel. This issue may allow a local attacker to cause double-deactivations of catchall elements, which can result in a memory leak.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.28%

19.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 6.5	—
Linux	Linux Kernel	6.5	Rc1
Redhat	Enterprise Linux	8.0	—
Redhat	Enterprise Linux	9.0	—
Debian	Debian Linux	12.0	—

References

https://access.redhat.com/security/cve/CVE-2023-4569Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2235470Issue Tracking, Patch, Third Party Advisory
https://patchwork.ozlabs.org/project/netfilter-devel/patch/20230812110526.49808-1-fw@strlen.de/Mailing List, Patch
https://www.debian.org/security/2023/dsa-5492Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4569Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2235470Issue Tracking, Patch, Third Party Advisory
https://patchwork.ozlabs.org/project/netfilter-devel/patch/20230812110526.49808-1-fw@strlen.de/Mailing List, Patch
https://www.debian.org/security/2023/dsa-5492Third Party Advisory

Timeline

Published: Aug 28, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4569?

How severe is CVE-2023-4569?

CVE-2023-4569 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4569?

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-2023-4569?

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

Scan your code now

Source: NVD / NIST