rustsec-2026-0002
Vulnerability from osv_rustsec
Published
2026-01-07 12:00
Modified
2026-01-08 05:46
Summary
`IterMut` violates Stacked Borrows by invalidating internal pointer
Details

Affected versions of this crate contain a soundness issue in the IterMut iterator implementation. The IterMut::next and IterMut::next_back methods temporarily create an exclusive reference to the key when dereferencing the internal node pointer.

This invalidates the shared pointer held by the internal HashMap, violating Stacked Borrows rules.

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "lru",
        "purl": "pkg:cargo/lru"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.9.0"
            },
            {
              "fixed": "0.16.3"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-rhfx-m35p-ff5j"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Affected versions of this crate contain a soundness issue in the `IterMut`\niterator implementation. The `IterMut::next` and `IterMut::next_back`\nmethods temporarily create an exclusive reference to the key when\ndereferencing the internal node pointer.\n\nThis invalidates the shared pointer held by the internal `HashMap`,\nviolating Stacked Borrows rules.",
  "id": "RUSTSEC-2026-0002",
  "modified": "2026-01-08T05:46:06Z",
  "published": "2026-01-07T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/lru"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0002.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jeromefroe/lru-rs/pull/224"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "`IterMut` violates Stacked Borrows by invalidating internal pointer"
}


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Detection rules are retrieved from Rulezet.