Vulnerability Monitor

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CVE-2023-42756

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.4, requiring local system access to exploit with relatively low complexity without requiring user interaction . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 4 products from linux, from redhat, from debian and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2023, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2023-09-28T14:15:21.037

Last Modified

2024-11-21T08:23:06.653

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.4 (MEDIUM)

Weaknesses

Type: Secondary
CWE-362
Type: Primary
CWE-362

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 6.6	Yes
Operating System	linux	linux_kernel	6.6	Yes
Operating System	linux	linux_kernel	6.6	Yes
Operating System	redhat	enterprise_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	fedoraproject	fedora	37	Yes
Operating System	fedoraproject	fedora	38	Yes
Operating System	fedoraproject	fedora	39	Yes

References

https://access.redhat.com/errata/RHSA-2024:2394 ([email protected])
https://access.redhat.com/security/cve/CVE-2023-42756 Patch, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=2239848 Exploit, Issue Tracking, Patch, Third Party Advisory ([email protected])
https://seclists.org/oss-sec/2023/q3/242 Exploit, Mailing List, Patch, Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2024:2394 (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/security/cve/CVE-2023-42756 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=2239848 Exploit, Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/[email protected]/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/[email protected]/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/[email protected]/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/ (af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/oss-sec/2023/q3/242 Exploit, Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.