CVE-2023-42756

MEDIUMNVD 4.44.4—Elevated

4.4

A flaw was found in the Netfilter subsystem of the Linux kernel. A race condition between IPSET_CMD_ADD and IPSET_CMD_SWAP can lead to a kernel panic due to the invocation of __ip_set_put on a wrong set. This issue may allow a local user to crash the system.

CVSS v3: 4.4
EG Score: 4.4(medium)
EPSS: 0.2%
KEV: Not listed

Published

September 28, 2023

Last Modified

November 21, 2024

References (12)

secalert@redhathttps://access.redhat.com/errata/RHSA-2024:2394
secalert@redhathttps://access.redhat.com/security/cve/CVE-2023-42756
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2239848
secalert@redhathttps://seclists.org/oss-sec/2023/q3/242
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:2394
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-42756
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2239848
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/
af854a3a-2127-422b-91ae-364da2661108https://seclists.org/oss-sec/2023/q3/242

Patch Availability(19)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-xilinx-zynqmp-tools-5.4.0-1032 (5.4.0-1032.36) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-bluefield (5.4.0.1073.68) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04c (6.1.0.1024.25) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-22.04-edge (6.2.0.35.35~22.04.13) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-intel-iotg (5.15.0.1043.43) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-20.04-edge (5.15.0.87.84) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-gcp-edge (5.4.0.1116.92) @ bionic	2026-05-24	ubuntu
ubuntu	linux-tools-starfive (6.2.0.1007.8~22.04.1) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-intel-iotg-edge (5.15.0.1043.49~20.04.33) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-gkeop-edge (5.15.0.1031.37~20.04.27) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-oracle-edge (5.15.0.1046.52~20.04.1) @ focal	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-22.04-edge (6.5.0.10.12) @ mantic	2026-05-24	ubuntu
ubuntu	linux-tools-raspi2-hwe-18.04-edge (5.4.0.1096.126) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-raspi-nolpae (6.5.0.1006.7) @ mantic	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-laptop-23.10 (6.5.0.1005.8) @ mantic	2026-05-24	ubuntu
ubuntu	linux-tools-starfive (6.5.0.1003.5) @ mantic	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04d (6.5.0.1007.9) @ jammy	2026-05-24	ubuntu
redhat	kernel-0:5.14.0-427.13.1.el9_4	2024-04-30	redhat

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(1)

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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

All Vendor Advisories

(20)

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 13× 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.

2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
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 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-24 16:55 UTCEG score recompute
2026-05-24 16:55 UTCVendor advisory
2026-05-24 16:53 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-42756?

CVE-2023-42756 is a medium vulnerability published on September 28, 2023. A flaw was found in the Netfilter subsystem of the Linux kernel. A race condition between IPSETCMDADD and IPSETCMDSWAP can lead to a kernel panic due to the invocation of ipsetput on a wrong set. This issue may allow a local user to crash the system.

When was CVE-2023-42756 disclosed?

CVE-2023-42756 was first published in the National Vulnerability Database on September 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-2023-42756 actively exploited?

CVE-2023-42756 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-42756?

CVE-2023-42756 has a CVSS v3 base score of 4.4 (NVD).

How do I remediate CVE-2023-42756?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42756, 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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CVE-2023-42756

Published

Last Modified

References (12)

Patch Availability(19)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-42756?

Same vendor

Same CWE

CVE-2023-42756

📅 Published

🔄 Last Modified

🔗 References (12)

Patch Availability(19)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-42756?

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References (12)

Frequently asked(5)

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