CVE-2023-42756
mediumA flaw was found in the Netfilter subsystem of the Linux kernel.
Vendor / product: Linux — linux kernel
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
4.7
4.7 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-09-28 14:15
Modified: 2026-11-01 11:18
NVD status: Modified
Last synced 10 hours ago
Verified against the source API 2026-11-01 11:20 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linux / linux_kernel <6.6, 6.6
redhat / enterprise_linux 9.0
debian / debian_linux 10.0
fedoraproject / fedora 37, 38, 39
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2023-42756
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2239848
Patch / mitigation: https://seclists.org/oss-sec/2023/q3/242
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2023-42756
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2239848
Patch / mitigation: https://seclists.org/oss-sec/2023/q3/242
References
- https://access.redhat.com/errata/RHSA-2024:2394 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2023-42756 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2239848 secalert@redhat.com
- https://seclists.org/oss-sec/2023/q3/242 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:2394 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/security/cve/CVE-2023-42756 af854a3a-2127-422b-91ae-364da2661108
- https://bugzilla.redhat.com/show_bug.cgi?id=2239848 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/package-announce@lists.fedoraproject.org/mes... af854a3a-2127-422b-91ae-364da2661108
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/mes... af854a3a-2127-422b-91ae-364da2661108
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/mes... af854a3a-2127-422b-91ae-364da2661108
- https://seclists.org/oss-sec/2023/q3/242 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-01 11:20 UTC · record ↗