GHSA-RHFX-M35P-FF5J

Vulnerability from github – Published: 2026-01-07 20:38 – Updated: 2026-01-07 20:38
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.

Severity ?
2.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "lru"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.9.0"
            },
            {
              "fixed": "0.16.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-07T20:38:57Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "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.\n\nThis invalidates the shared pointer held by the internal `HashMap`, violating Stacked Borrows rules.",
  "id": "GHSA-rhfx-m35p-ff5j",
  "modified": "2026-01-07T20:38:57Z",
  "published": "2026-01-07T20:38:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jeromefroe/lru-rs/pull/224"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jeromefroe/lru-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0002.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "`IterMut` violates Stacked Borrows by invalidating internal pointer"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.