GHSA-J3W3-P6MR-3HRH

Vulnerability from github – Published: 2026-04-04 05:55 – Updated: 2026-04-04 05:55
VLAI
Summary
DynFuture Drop Can Construct a Dangling Reference
Details

DynFuture is unsound because its Drop implementation transmutes a trait-object reference into unrelated reference types, which constructs an invalid reference from trait object metadata.

This issue was reproduced against dyn-future 3.0.4 under Miri. The crate is unmaintained.

Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "dyn-future"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "3.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-843"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-04T05:55:51Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "DynFuture is unsound because its Drop implementation transmutes a trait-object reference into unrelated reference types, which constructs an invalid reference from trait object metadata.\n\nThis issue was reproduced against `dyn-future` 3.0.4 under Miri. The crate is unmaintained.",
  "id": "GHSA-j3w3-p6mr-3hrh",
  "modified": "2026-04-04T05:55:51Z",
  "published": "2026-04-04T05:55:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rustsec/advisory-db/issues/2595"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/xacrimon/dyn-future"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0079.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "DynFuture Drop Can Construct a Dangling Reference"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

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Detection rules are retrieved from Rulezet.