wasmtime_trap_code C API function has out of bounds write vulnerability

{
  "id": "57944a252150181d40e0ec5921ec9fc7cddabfe7c6984ed9cbfb70bd196e6288",
  "url": "https://osv.dev/vulnerability/CVE-2022-39394",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wasmtime_trap_code C API function has out of bounds write vulnerability",
    "summary": "Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime's C API implementation where the definition of the `wasmtime_trap_code` does not match its declared signature in the `wasmtime/trap.h` header file. This discrepancy causes the function implementation to perform a 4-byte write into a 1-byte buffer provided by the caller. This can lead to three zero bytes being written beyond the 1-byte location provided by the caller. This bug has been patched and users should upgrade to Wasmtime 2.0.2. This bug can be worked around by providing a 4-byte buffer casted to a 1-byte buffer when calling `wasmtime_trap_code`. Users of the `wasmtime` crate are not affected by this issue, only users of the C API function `wasmtime_trap_code` are affected.",
    "evidence": "osv:CVE-2022-39394",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2022-39394",
      "aliases": [
        "CVE-2022-39394",
        "GHSA-h84q-m8rr-3v9q",
        "RUSTSEC-2022-0097"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bytecodealliance/wasmtime",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "15991947f485a60298e45d1d915125c0f3cc5a8a"
                },
                {
                  "introduced": "ff8c568eeed3918a5d591295e9384e2b1e462aae"
                },
                {
                  "fixed": "a528e0383e1177119a6c985dac1972513df11a03"
                },
                {
                  "fixed": "087d9d7becf7422b3f872a3bcd5d97bb7ce7ff36"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.0.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "087d9d7becf7422b3f872a3bcd5d97bb7ce7ff36"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.0.1",
            "v2.0.1",
            "v2.0.0",
            "v1.0.0",
            "v0.35.0",
            "v0.33.0",
            "v0.34.0",
            "v0.32.0",
            "v0.31.0",
            "v0.30.0",
            "v0.29.0",
            "v0.28.0",
            "v0.27.0",
            "v0.26.0",
            "v0.25.0",
            "v0.24.0",
            "v0.23.0",
            "v0.22.0",
            "cranelift-v0.69.0",
            "v0.21.0",
            "v0.20.0",
            "v0.19.0",
            "v0.18.0",
            "v0.17.0",
            "v0.16.0",
            "cranelift-v0.61.0",
            "cranelift-v0.60.0",
            "v0.12.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-39394.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.058970501Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39394.json",
        "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-h84q-m8rr-3v9q",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-39394",
        "https://github.com/bytecodealliance/wasmtime/commit/087d9d7becf7422b3f872a3bcd5d97bb7ce7ff36"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-787"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39394.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-39394",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496555,
  "published_at": "2022-11-10T00:00:00+00:00"
}