HDF5 H5Centry.c H5C__flush_single_entry null pointer dereference

{
  "id": "290727baf32a8eb4658f1ba96aa7b0d222376867afc1ee757513afb7e858200c",
  "url": "https://osv.dev/vulnerability/CVE-2025-6858",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "HDF5 H5Centry.c H5C__flush_single_entry null pointer dereference",
    "summary": "A vulnerability was found in HDF5 1.14.6 and classified as problematic. Affected by this issue is the function H5C__flush_single_entry of the file src/H5Centry.c. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.",
    "evidence": "osv:CVE-2025-6858",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-6858",
      "aliases": [
        "CVE-2025-6858"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hdfgroup/hdf5",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7bf340440909d468dbb3cf41f0ea0d87f5050cea"
                },
                {
                  "last_affected": "7bf340440909d468dbb3cf41f0ea0d87f5050cea"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.14.6"
                      },
                      {
                        "last_affected": "1.14.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "cpe": "cpe:2.3:a:hdfgroup:hdf5:1.14.6:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.14.6"
                      },
                      {
                        "last_affected": "1.14.6"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.14.6",
            "hdf5_1.14.6",
            "hdf5-1.14.6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6858.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.178855053Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6858.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-6858",
        "https://vuldb.com/?id.314330",
        "https://vuldb.com/?submit.602530",
        "https://github.com/HDFGroup/hdf5/issues/5576",
        "https://vuldb.com/?ctiid.314330",
        "https://github.com/user-attachments/files/20623475/hdf5_crash_8.txt"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-404",
          "CWE-476"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6858.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-6858",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514173,
  "published_at": "2025-06-29T11:00:14.487+00:00"
}