rustsec-2025-0106
Vulnerability from osv_rustsec
Published
2025-10-21 12:00
Modified
2025-10-28 06:02
Summary
Undefined behavior in index_of_ptr with empty slices
Details

The safe function index_of_ptr causes undefined behavior when called with an empty slice.

The issue occurs in the line ptr.add(slice.len() - 1) which underflows when slice.len() is 0, creating a pointer with a massive offset. According to Rust's safety rules, creating such a pointer causes immediate undefined behavior.

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "orx_pinned_vec::utils::slice::index_of_ptr"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "orx-pinned-vec",
        "purl": "pkg:cargo/orx-pinned-vec"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "3.21.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-h5j3-crg5-8jqm"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The safe function `index_of_ptr` causes undefined behavior when called with an empty slice.\n\nThe issue occurs in the line `ptr.add(slice.len() - 1)` which underflows when `slice.len()` is 0, creating a pointer with a massive offset. According to Rust\u0027s safety rules, creating such a pointer causes immediate undefined behavior.",
  "id": "RUSTSEC-2025-0106",
  "modified": "2025-10-28T06:02:18Z",
  "published": "2025-10-21T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/orx-pinned-vec"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2025-0106.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/orxfun/orx-pinned-vec/issues/52"
    },
    {
      "type": "WEB",
      "url": "https://github.com/orxfun/orx-pinned-vec/pull/53"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Undefined behavior in index_of_ptr with empty slices"
}


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