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Vulnerability record · CVE-2023-3966 · published 22 February 2024

CVE-2023-3966: Openvswitch vulnerability

Openvswitch · Openvswitch

A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled.

7.5 CVSS 3.1 High EPSS 1.0% · top 37.6% CWE-248 · CWE-248
7.5CVSS 3.1 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2023-3966 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2178363 Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/LFZADABUDOFI2KZIRQBYFZCIK Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/VYYUBF6OW2JG7VOFEOROHXGSJ Mailing List
https://access.redhat.com/security/cve/CVE-2023-3966 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2178363 Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/LFZADABUDOFI2KZIRQBYFZCIK Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/VYYUBF6OW2JG7VOFEOROHXGSJ Mailing List

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Source: NIST National Vulnerability Database (record CVE-2023-3966), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.