rustsec-2024-0357
Vulnerability from osv_rustsec
Published
2024-07-21 12:00
Modified
2025-10-28 06:02
Summary
`MemBio::get_buf` has undefined behavior with empty buffers
Details

Previously, MemBio::get_buf called slice::from_raw_parts with a null-pointer, which violates the functions invariants, leading to undefined behavior. In debug builds this would produce an assertion failure. This is now fixed.

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{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "openssl::bio::MemBio::get_buf"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "openssl",
        "purl": "pkg:cargo/openssl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.10.66"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-q445-7m23-qrmw"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Previously, `MemBio::get_buf` called `slice::from_raw_parts` with a null-pointer, which violates the functions invariants, leading to undefined behavior. In debug builds this would produce an assertion failure. This is now fixed.",
  "id": "RUSTSEC-2024-0357",
  "modified": "2025-10-28T06:02:18Z",
  "published": "2024-07-21T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/openssl"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0357.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sfackler/rust-openssl/pull/2266"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "`MemBio::get_buf` has undefined behavior with empty buffers"
}


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