rustsec-2024-0442
Vulnerability from osv_rustsec
Published
2024-07-06 12:00
Modified
2025-10-28 06:02
Summary
Dump Undefined Memory by `JitDumpFile`
Details

The unsound function dump_code_load_record uses from_raw_parts to directly convert the pointer addr and len into a slice without any validation and that memory block would be dumped.

Thus, the 'safe' function dump_code_load_record is actually 'unsafe' since it requires the caller to guarantee that the addr is valid and len must not overflow. Otherwise, the function could dump the memory into file illegally, causing memory leak.

Note: this is an internal-only crate in the Wasmtime project not intended for external use and is more strongly signaled nowadays as of bytecodealliance/wasmtime#10963. Please open an issue in Wasmtime if you're using this crate directly.

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-exposure"
        ],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "wasmtime_jit_debug::perf_jitdump::JitDumpFile::dump_code_load_record"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "wasmtime-jit-debug",
        "purl": "pkg:cargo/wasmtime-jit-debug"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "24.0.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-9ghp-w2hm-vfpf"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The unsound function `dump_code_load_record` uses `from_raw_parts` to directly convert \nthe pointer `addr` and `len` into a slice without any validation and that memory block \nwould be dumped.\n\nThus, the \u0027safe\u0027 function dump_code_load_record is actually \u0027unsafe\u0027 since it requires \nthe caller to guarantee that the addr is valid and len must not overflow.\nOtherwise, the function could dump the memory into file illegally, causing memory leak.\n\n\u003e **Note**: this is an internal-only crate in the Wasmtime project not intended for\nexternal use and is more strongly signaled nowadays as of\n[bytecodealliance/wasmtime#10963](https://github.com/bytecodealliance/wasmtime/pull/10963).\nPlease open an issue in Wasmtime if you\u0027re using this crate directly.",
  "id": "RUSTSEC-2024-0442",
  "modified": "2025-10-28T06:02:18Z",
  "published": "2024-07-06T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/wasmtime-jit-debug"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0442.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/bytecodealliance/wasmtime/issues/8905"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Dump Undefined Memory by `JitDumpFile`"
}


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