UNKNOWN WRITE in Runtime_Release

{
  "id": "91857bfc23221451402f585d6b6294bd81354d3499c04997c91224a74359d5b9",
  "url": "https://osv.dev/vulnerability/OSV-2021-689",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UNKNOWN WRITE in Runtime_Release",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33689 ``` Crash type: UNKNOWN WRITE Crash state: Runtime_Release EvaluateExpression InitDataSegments ```",
    "evidence": "osv:OSV-2021-689",
    "products": [
      {
        "name": {
          "value": "wasm3",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v0.5.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v0.9.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v0.9.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v0.9.1-beta.1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2021-689",
      "aliases": [
        "OSV-2021-689"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wasm3/wasm3",
              "type": "GIT",
              "events": [
                {
                  "introduced": "64a22dcdc3e4239cb91b153d25c8b5bb2fac430e"
                }
              ]
            }
          ],
          "package": {
            "name": "wasm3",
            "purl": "pkg:generic/wasm3",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v0.5.0",
            "v0.9.0",
            "v0.9.1",
            "v0.9.1-beta.1"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wasm3/OSV-2021-689.yaml"
          },
          "ecosystem_specific": {
            "severity": "HIGH"
          }
        }
      ],
      "modified": "2026-10-19T14:26:35.943406Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33689"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 374792,
  "published_at": "2021-04-27T00:01:03.314259+00:00"
}