Security advisory

{
  "id": "a105944455b32611f1da53280228f4e35f542fb6c77fe9a6aae618a719479e0a",
  "url": "https://osv.dev/vulnerability/CVE-2021-43668",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-43668",
    "summary": "Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.",
    "evidence": "osv:CVE-2021-43668",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-43668",
      "aliases": [
        "CVE-2021-43668",
        "GHSA-5m8f-chrv-7rw5"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ethereum/go-ethereum",
              "type": "GIT",
              "events": [
                {
                  "introduced": "eae3b1946a276ac099e0018fc792d9e8c3bfda6d"
                },
                {
                  "last_affected": "eae3b1946a276ac099e0018fc792d9e8c3bfda6d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ethereum:go_ethereum:1.10.9:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.10.9"
                      },
                      {
                        "last_affected": "1.10.9"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.10.9",
            "v1.10.9"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43668.json"
          }
        }
      ],
      "modified": "2026-10-20T10:55:02.641361397Z",
      "provider": "osv",
      "references": [
        "https://github.com/ethereum/go-ethereum/issues/23866"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-43668",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386766,
  "published_at": "2021-11-18T16:15:09.23+00:00"
}