Heap-buffer-overflow in H5T__bit_find

{
  "id": "33708ef6ec59903e5c579712a0de5a9a59cc1ab792219b10f1ed94540ecb88aa",
  "url": "https://osv.dev/vulnerability/OSV-2026-1279",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in H5T__bit_find",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=560740865 ``` Crash type: Heap-buffer-overflow READ 1 Crash state: H5T__bit_find H5T__conv_f_i_loop H5T__conv_f_i ```",
    "evidence": "osv:OSV-2026-1279",
    "products": [
      {
        "name": {
          "value": "matio",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v1.6.0",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2026-1279",
      "aliases": [
        "OSV-2026-1279"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tbeu/matio.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ac1c67c687533d2de55f96709ed4512d4c197801"
                },
                {
                  "fixed": "fe19d779aa324f1b1a025d4287afcd5740d12522"
                }
              ]
            }
          ],
          "package": {
            "name": "matio",
            "purl": "pkg:generic/matio",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v1.6.0"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/matio/OSV-2026-1279.yaml"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-22T12:15:03.147093496Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=560740865"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 405471,
  "published_at": "2026-09-14T00:18:36.930781+00:00"
}