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openvswitch — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2023-1668

A flaw was found in openvswitch (OVS). When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results (for both kernel and userspace datapath) in installing a datapath flow matching all IP protocols (nw_proto is wildcarded) for this flow, but with an incorrect action, possibly causing incorrect handling of other IP packets with a != 0 IP protocol that matches this dp flow.

Products
openvswitch
Affected versions
Not specified
Fixed versions
3.1.0-2
CVEs
CVE-2023-1668
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 15:22 UTC · Revision 1

Source evidence

DEBIAN-CVE-2023-1668

core-osv · Original source

Published 10 Apr 2023, 22:15 UTC

A flaw was found in openvswitch (OVS). When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results (for both kernel and userspace datapath) in installing a datapath flow matching all IP protocols (nw_proto is wildcarded) for this flow, but with an incorrect action, possibly causing incorrect handling of other IP packets with a != 0 IP protocol that matches this dp flow.

osv:DEBIAN-CVE-2023-1668

openvswitch

Fixed versions: 3.1.0-2

openvswitch

Fixed versions: 3.1.0-2

openvswitch

Fixed versions: 3.1.0-2

Complete source record
{
  "id": "cdd0c6d204a6c810455c5a22aa8ce12eb9aac5cb8f0a15671a3731e72e74cb0c",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-1668",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2023-1668",
    "summary": "A flaw was found in openvswitch (OVS). When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results (for both kernel and userspace datapath) in installing a datapath flow matching all IP protocols (nw_proto is wildcarded) for this flow, but with an incorrect action, possibly causing incorrect handling of other IP packets with a != 0 IP protocol that matches this dp flow.",
    "evidence": "osv:DEBIAN-CVE-2023-1668",
    "products": [
      {
        "name": {
          "value": "openvswitch",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.1.0-2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "openvswitch",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.1.0-2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "openvswitch",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.1.0-2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2023-1668",
      "aliases": [
        "DEBIAN-CVE-2023-1668"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.1.0-2"
                }
              ]
            }
          ],
          "package": {
            "name": "openvswitch",
            "purl": "pkg:deb/debian/openvswitch?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-1668.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.1.0-2"
                }
              ]
            }
          ],
          "package": {
            "name": "openvswitch",
            "purl": "pkg:deb/debian/openvswitch?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-1668.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.1.0-2"
                }
              ]
            }
          ],
          "package": {
            "name": "openvswitch",
            "purl": "pkg:deb/debian/openvswitch?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-1668.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T18:00:24.260493452Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-1668"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2023-1668"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-1668",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 454998,
  "published_at": "2023-04-10T22:15:09.133+00:00"
}