RUSTSEC-2026-0002 (GHSA-RHFX-M35P-FF5J)

Vulnerability from osv_rustsec – Published: 2026-01-07 12:00 – Updated: 2026-01-08 05:46 – Source website
VLAI
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.

References
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": "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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