gopacket: Multiple layer decoders panic on crafted packets (out-of-bounds/underflow) enabling unauthenticated remote DoS via DecodingLayerParser

{
  "id": "86804f7d713f36db2bdf7d6a978b9ab254ce63ea32e83ef654343a73d9aba01a",
  "url": "https://osv.dev/vulnerability/CVE-2026-65819",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "gopacket: Multiple layer decoders panic on crafted packets (out-of-bounds/underflow) enabling unauthenticated remote DoS via DecodingLayerParser",
    "summary": "gopacket provides packet processing capabilities for Go. Through version 1.7.0, multiple layer decoders use attacker-controlled lengths, counts, or offsets before validating them against packet buffers, allowing a crafted packet decoded through DecodingLayerParser or DecodeFromBytes to trigger an unrecovered panic and remotely deny service. A patch commit is available at 210f25f.",
    "evidence": "osv:CVE-2026-65819",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-65819",
      "aliases": [
        "CVE-2026-65819",
        "GHSA-8mcr-459q-5mx2"
      ],
      "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": [
            {
              "repo": "https://github.com/gopacket/gopacket",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "210f25fb9b3ca1af2eb649936f78ad6991b6c9c5"
                },
                {
                  "fixed": "d33818550d69d4ae2bb340b6e26cd67af4f46dbd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.7.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "210f25fb9b3ca1af2eb649936f78ad6991b6c9c5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d33818550d69d4ae2bb340b6e26cd67af4f46dbd"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.7.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.6.1",
            "v1.6.0",
            "v1.5.0",
            "v1.4.0",
            "v1.3.1",
            "v1.3.0",
            "v.1.3.0",
            "v1.2.0",
            "v1.1.1",
            "v1.1.0",
            "v1.0.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65819.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.598047994Z",
      "provider": "osv",
      "references": [
        "https://github.com/gopacket/gopacket/releases/tag/v1.7.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65819.json",
        "https://github.com/gopacket/gopacket/security/advisories/GHSA-8mcr-459q-5mx2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-65819",
        "https://github.com/gopacket/gopacket/commit/210f25fb9b3ca1af2eb649936f78ad6991b6c9c5"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-125",
          "CWE-400"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65819.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-65819",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500998,
  "published_at": "2026-08-07T19:19:16.032+00:00"
}