Heap-buffer-overflow in back_passDoAction

{
  "id": "46cb809717053bc91f73fabfb5dafd22233122c6c7fa8817a428da101c30a2a5",
  "url": "https://osv.dev/vulnerability/OSV-2023-952",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in back_passDoAction",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=62875 ``` Crash type: Heap-buffer-overflow READ 10 Crash state: back_passDoAction _lou_backTranslate lou_backTranslateString ```",
    "evidence": "osv:OSV-2023-952",
    "products": [
      {
        "name": {
          "value": "liblouis",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v3.26.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.27.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.28.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.29.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.30.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.31.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.32.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.33.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.34.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.35.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v3.36.0",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2023-952",
      "aliases": [
        "OSV-2023-952"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/liblouis/liblouis",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7d66e40712f6b44f33d9b4bdcfe42db3e65082b8"
                },
                {
                  "fixed": "f8da4099d1774e153e2cc45d0d39663b5762f381"
                },
                {
                  "fixed": "de314c830a32be8073fc93291912aff9d7697f18"
                }
              ]
            }
          ],
          "package": {
            "name": "liblouis",
            "purl": "pkg:generic/liblouis",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v3.26.0",
            "v3.27.0",
            "v3.28.0",
            "v3.29.0",
            "v3.30.0",
            "v3.31.0",
            "v3.32.0",
            "v3.33.0",
            "v3.34.0",
            "v3.35.0",
            "v3.36.0"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/liblouis/OSV-2023-952.yaml"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-20T17:25:20.290134980Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=62875"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 389866,
  "published_at": "2023-10-02T13:03:05.682426+00:00"
}