Stack-buffer-overflow in utf8_in2

{
  "id": "7cc7b64852f0fe9ea9f14b3b76cccce61d675fec95a08799f7707c6f8e841cf1",
  "url": "https://osv.dev/vulnerability/OSV-2025-169",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Stack-buffer-overflow in utf8_in2",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=399228595 ``` Crash type: Stack-buffer-overflow READ 1 Crash state: utf8_in2 MatchRule TranslateRules ```",
    "evidence": "osv:OSV-2025-169",
    "products": [
      {
        "name": {
          "value": "espeak-ng",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.51",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.52.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.51.1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2025-169",
      "aliases": [
        "OSV-2025-169"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/espeak-ng/espeak-ng",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0a713d52bbf3e061823d1a7f35e5303e7320f27a"
                },
                {
                  "fixed": "80f7d5d5869584913b03760db302b6ca0dda9f55"
                },
                {
                  "fixed": "932fe546ce247951450472bb7e13af8197169ed4"
                }
              ]
            }
          ],
          "package": {
            "name": "espeak-ng",
            "purl": "pkg:generic/espeak-ng",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "1.51",
            "1.52.0",
            "1.51.1"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/espeak-ng/OSV-2025-169.yaml",
            "fixed_range": "c9f465da2acb280f4403cd668224a94cc4db342d:80f7d5d5869584913b03760db302b6ca0dda9f55"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-20T17:24:02.794825896Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=399228595"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 389801,
  "published_at": "2025-02-27T00:07:08.029075+00:00"
}