Heap-buffer-overflow in H5F_addr_decode_len

{
  "id": "71417b89122ff0a21ea2b8afc93e8ff0ca10822939ea169ab58935d10c903799",
  "url": "https://osv.dev/vulnerability/OSV-2021-218",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in H5F_addr_decode_len",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29776 ``` Crash type: Heap-buffer-overflow READ 1 Crash state: H5F_addr_decode_len H5F_addr_decode H5G_ent_decode ```",
    "evidence": "osv:OSV-2021-218",
    "products": [
      {
        "name": {
          "value": "matio",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v1.5.20",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v1.5.21",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v1.5.22",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v1.5.23",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2021-218",
      "aliases": [
        "OSV-2021-218"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "git://git.code.sf.net/p/matio/matio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1ce8f2d1845ecdde19a35605cabdbb884776d52d"
                },
                {
                  "fixed": "04d1deab800d962055a1c5509e25ad8dfe05c4f1"
                }
              ]
            }
          ],
          "package": {
            "name": "matio",
            "purl": "pkg:generic/matio",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v1.5.20",
            "v1.5.21",
            "v1.5.22",
            "v1.5.23"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/matio/OSV-2021-218.yaml"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-20T17:24:24.664160575Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29776"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 389813,
  "published_at": "2021-01-22T00:00:16.221512+00:00"
}