Heap-buffer-overflow in mmcall

{
  "id": "b4ad31e9849b5238070ff3e96050bf96b2c740aa03e55528a8451b4fd504d09d",
  "url": "https://osv.dev/vulnerability/OSV-2025-1020",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in mmcall",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=471093652 ``` Crash type: Heap-buffer-overflow WRITE 8 Crash state: mmcall lj_meta_tset lj_vmeta_tsetv ```",
    "evidence": "osv:OSV-2025-1020",
    "products": [
      {
        "name": {
          "value": "tarantool",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.5.0",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.5.1",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.5.1-entrypoint",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.5.2",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.5.2-entrypoint",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.5.3-entrypoint",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.6.0",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.6.0-entrypoint",
            "evidence": "/affected/0/versions"
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          {
            "value": "3.6.1",
            "evidence": "/affected/0/versions"
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            "evidence": "/affected/0/versions"
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            "value": "3.6.2",
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            "value": "3.6.2-entrypoint",
            "evidence": "/affected/0/versions"
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            "evidence": "/affected/0/versions"
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            "evidence": "/affected/0/versions"
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            "value": "3.6.4",
            "evidence": "/affected/0/versions"
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            "value": "3.6.4-entrypoint",
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            "value": "3.7.0",
            "evidence": "/affected/0/versions"
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            "evidence": "/affected/0/versions"
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            "evidence": "/affected/0/versions"
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        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2025-1020",
      "aliases": [
        "OSV-2025-1020"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tarantool/tarantool",
              "type": "GIT",
              "events": [
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                  "introduced": "8c7cfb1cd0b3f5ce1d5b181403f68f7aaf657d9a"
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                  "fixed": "63d9f01e339f4da711b37bc754199e59ac7216be"
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          "package": {
            "name": "tarantool",
            "purl": "pkg:generic/tarantool",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
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            "3.5.1",
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            "3.8.1-entrypoint",
            "3.8.2-entrypoint",
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          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/tarantool/OSV-2025-1020.yaml",
            "fixed_range": "d3c3c5f938a3c457566d71332d5a45db64495141:63d9f01e339f4da711b37bc754199e59ac7216be"
          },
          "ecosystem_specific": {
            "severity": "HIGH"
          }
        }
      ],
      "modified": "2026-10-21T22:30:04.794136058Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=471093652"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 401008,
  "published_at": "2025-12-25T00:17:49.020029+00:00"
}