CVE-2023-4569

MEDIUMNVD 5.55.5—

5.5

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.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 2.1%
KEV: Not listed

Published

August 28, 2023

Last Modified

November 21, 2024

References (8)

secalert@redhathttps://access.redhat.com/security/cve/CVE-2023-4569
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2235470
secalert@redhathttps://patchwork.ozlabs.org/project/netfilter-devel/patch/20230812110526.49808-1-fw@strlen.de/
secalert@redhathttps://www.debian.org/security/2023/dsa-5492
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-4569
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2235470
af854a3a-2127-422b-91ae-364da2661108https://patchwork.ozlabs.org/project/netfilter-devel/patch/20230812110526.49808-1-fw@strlen.de/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5492

Patch Availability(9)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-virtual-hwe-22.04-edge (6.2.0.33.33) @ lunar	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04c (6.1.0.1022.22) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-20.04-edge (5.15.0.84.81) @ jammy	2026-05-24	ubuntu
ubuntu	lowlatency-4.4 (4.4.0-168) @ xenial	2026-05-24	ubuntu
ubuntu	linux-tools-raspi-nolpae (5.15.0.1038.36) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04b (6.0.0.1021.21) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-nvidia-hwe-22.04-edge (6.2.0.1011.13) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-oracle-edge (5.15.0.1044.50~20.04.1) @ focal	2026-05-24	ubuntu
ubuntu	ibm (5.15.0-1000) @ jammy	2026-05-24	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(10)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 18:37 UTCEG score recompute
2026-05-24 18:37 UTCVendor advisory
2026-05-24 18:37 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-4569?

CVE-2023-4569 is a medium vulnerability published on August 28, 2023. A memory leak flaw was found in nftsetcatchallflush in net/netfilter/nftables_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.

When was CVE-2023-4569 disclosed?

CVE-2023-4569 was first published in the National Vulnerability Database on August 28, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-4569 actively exploited?

CVE-2023-4569 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-4569?

CVE-2023-4569 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2023-4569?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4569, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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