Heap-buffer-overflow in load_u64

{
  "id": "73d346fb5c85471de7e7a252b7830b0b8169e360a3126743b0ec4d1d6254d85e",
  "url": "https://osv.dev/vulnerability/OSV-2026-1345",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in load_u64",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=567611282 ``` Crash type: Heap-buffer-overflow WRITE 8 Crash state: load_u64 datetime_unpack luamp_decode_with_ctx ```",
    "evidence": "osv:OSV-2026-1345",
    "products": [
      {
        "name": {
          "value": "tarantool",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.6.4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.7.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.7.2-entrypoint",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.8.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.8.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.8.1-entrypoint",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.8.2-entrypoint",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.9.0-entrypoint",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2026-1345",
      "aliases": [
        "OSV-2026-1345"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tarantool/tarantool",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c679fad72328070e9d94426077b8cc45c390e313"
                },
                {
                  "fixed": "81a8cb24a56aac8ef0145b321e661046b815ace3"
                },
                {
                  "introduced": "ea71e2c3be2f5271e0cfd86ff63d36f97d484c7f"
                },
                {
                  "introduced": "017842b2df13207ff7a817dcafd89c0d6b10c2ba"
                },
                {
                  "fixed": "032de62ca186810d5ce93d6625e25c16be266db8"
                },
                {
                  "fixed": "4f216daa14029f952714b6ec97b1bb23385bfe98"
                },
                {
                  "fixed": "00174ebcd854abf1cead3cdca6e43a6539248e59"
                }
              ]
            }
          ],
          "package": {
            "name": "tarantool",
            "purl": "pkg:generic/tarantool",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "3.6.4",
            "3.7.1",
            "3.7.2-entrypoint",
            "3.8.0",
            "3.8.1",
            "3.8.1-entrypoint",
            "3.8.2-entrypoint",
            "3.9.0-entrypoint"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/tarantool/OSV-2026-1345.yaml",
            "fixed_range": "36f5233ac875e4d5b1a9310697a84ccdb77ef5b5:81a8cb24a56aac8ef0145b321e661046b815ace3"
          },
          "ecosystem_specific": {
            "severity": "HIGH"
          }
        }
      ],
      "modified": "2026-10-23T12:15:03.883104344Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=567611282"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 412784,
  "published_at": "2026-10-01T00:11:42.217351+00:00"
}