gobgp — security advisory

{
  "id": "2d5c0360c019580e16166afb7c570df2ced0f820601596558c3d0916b4881df9",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-42285",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-42285",
    "summary": "GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message. When the server receives a message with inconsistent attribute lengths, it improperly handles the internal state transition to a \"withdraw\" action, leading to a nil pointer dereference in the AdjRib.Update function. This causes the entire GoBGP process to crash, resulting in a complete loss of service availability. This issue has been patched in version 4.5.0.",
    "evidence": "osv:DEBIAN-CVE-2026-42285",
    "products": [
      {
        "name": {
          "value": "gobgp",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.5.0-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "3.36.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.3.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.4.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.5.0-1~bpo13+1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-42285",
      "aliases": [
        "DEBIAN-CVE-2026-42285"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4.5.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "gobgp",
            "purl": "pkg:deb/debian/gobgp?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "3.36.0-2",
            "4.3.0-1",
            "4.4.0-1",
            "4.5.0-1~bpo13+1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42285.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:34.923873147Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-42285"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-42285"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-42285",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 461211,
  "published_at": "2026-05-07T12:16:18.18+00:00"
}