Incus vulnerable to antispoofing nftables firewall rule bypass on bridge networks with ACLs

{
  "id": "8f9566dba06f3076bc6400bb4048a14dff2f39be7a61080828ff926877b540ec",
  "url": "https://osv.dev/vulnerability/CVE-2025-52890",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Incus vulnerable to antispoofing nftables firewall rule bypass on bridge networks with ACLs",
    "summary": "Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus versions 6.12 and 6.13generates nftables rules that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to ARP spoofing on the bridge and to fully spoof another VM/container on the same bridge. Commit 254dfd2483ab8de39b47c2258b7f1cf0759231c8 contains a patch for the issue.",
    "evidence": "osv:CVE-2025-52890",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-52890",
      "aliases": [
        "CVE-2025-52890",
        "GHSA-p7fw-vjjm-2rwp",
        "GO-2025-3782"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/lxc/incus",
              "type": "GIT",
              "events": [
                {
                  "introduced": "11f8f9e6ae151984a7abd2d9f9b02a6f3c9af320"
                },
                {
                  "fixed": "254dfd2483ab8de39b47c2258b7f1cf0759231c8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "6.12"
                      },
                      {
                        "last_affected": "6.13"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "254dfd2483ab8de39b47c2258b7f1cf0759231c8"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.13.0",
            "v6.12.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-52890.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.940785589Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52890.json",
        "https://github.com/lxc/incus/security/advisories/GHSA-p7fw-vjjm-2rwp",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-52890",
        "https://github.com/lxc/incus/commit/254dfd2483ab8de39b47c2258b7f1cf0759231c8"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52890.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-52890",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498064,
  "published_at": "2025-06-25T16:51:24.279+00:00"
}