rustsec-2026-0133
Vulnerability from osv_rustsec
Published
2026-05-02 12:00
Modified
2026-05-13 12:38
Summary
Invalid pointer arithmetic in `iter()` and `iter_mut()`
Details

The iter() and iter_mut() APIs compute current = (&children[0] as *const *const RawAutoChild).sub(1), which performs pointer subtraction going before the start of the allocation. This is undefined behavior per Rust's pointer arithmetic rules.

This can be triggered through safe public APIs — iter() and iter_mut() — with no unsafe required from the caller.

To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "auto_vec",
        "purl": "pkg:cargo/auto_vec"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The `iter()` and `iter_mut()` APIs compute\n`current = (\u0026children[0] as *const *const RawAutoChild).sub(1)`, which\nperforms pointer subtraction going before the start of the allocation. This\nis undefined behavior per Rust\u0027s pointer arithmetic rules.\n\nThis can be triggered through safe public APIs \u2014 `iter()` and `iter_mut()`\n\u2014 with no `unsafe` required from the caller.",
  "id": "RUSTSEC-2026-0133",
  "modified": "2026-05-13T12:38:12Z",
  "published": "2026-05-02T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/auto_vec"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0133.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/lluvz/AutoVec/issues/1"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Invalid pointer arithmetic in `iter()` and `iter_mut()`"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.