rustsec-2025-0133
Vulnerability from osv_rustsec
Published
2025-12-04 12:00
Modified
2025-12-06 07:36
Summary
Incorrect calculation on aarch64
Details

On platforms without the core::arch::aarch64::vxarq_u64 intrinsic, an unverified fallback in libcrux-intrinsics v0.0.3 passed incorrect arguments and produced wrong results. This corrupted SHA-3 digests and caused libcrux-ml-kem and libcrux-ml-dsa to sample incorrectly, yielding incorrect shared secrets and invalid signatures.

The issue has been fixed in v0.0.4.

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "crypto-failure"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [
            "aarch64"
          ],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "libcrux-intrinsics",
        "purl": "pkg:cargo/libcrux-intrinsics"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.4-0"
            },
            {
              "fixed": "0.0.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-2cgv-28vr-rv6j"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "On platforms without the `core::arch::aarch64::vxarq_u64` intrinsic, an unverified fallback in `libcrux-intrinsics` v0.0.3\npassed incorrect arguments and produced wrong results. This corrupted SHA-3 digests and caused `libcrux-ml-kem` and\n`libcrux-ml-dsa` to sample incorrectly, yielding incorrect shared secrets and invalid signatures.\n\nThe issue has been fixed in v0.0.4.",
  "id": "RUSTSEC-2025-0133",
  "modified": "2025-12-06T07:36:56Z",
  "published": "2025-12-04T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/libcrux-intrinsics"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2025-0133.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cryspen/libcrux/issues/1220"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Incorrect calculation on aarch64"
}


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