Vulnerability-Lookup

RUSTSEC-2026-0286

Vulnerability from osv_rustsec

Published

2026-09-16 12:00

Modified

2026-09-17 07:37

Summary

Out-of-bounds read when decoding CKA_ALLOWED_MECHANISMS

Details

cryptoki treated the CKA_ALLOWED_MECHANISMS ulValueLen byte count as a CK_MECHANISM_TYPE element count. A valid nonempty attribute returned through the safe Session::get_attributes API could cause construction of an out-of-bounds slice and undefined behavior.

Possible consequences include a process crash or denial of service and potential disclosure of adjacent heap words. Upgrade to the fixed patch release for the cryptoki 0.10, 0.11, or 0.12 line.

References

URL

Type

	https://crates.io/crates/cryptoki	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2026-0286.html	ADVISORY
	https://github.com/parallaxsecond/rust-cryptoki/p…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-exposure"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "cryptoki",
        "purl": "pkg:cargo/cryptoki"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.10.1"
            },
            {
              "introduced": "0.11.0"
            },
            {
              "fixed": "0.11.1"
            },
            {
              "introduced": "0.12.0"
            },
            {
              "fixed": "0.12.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-r6vc-97x9-63vv"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "`cryptoki` treated the CKA_ALLOWED_MECHANISMS ulValueLen byte count as a\nCK_MECHANISM_TYPE element count. A valid nonempty attribute returned through\nthe safe `Session::get_attributes` API could cause construction of an\nout-of-bounds slice and undefined behavior.\n\nPossible consequences include a process crash or denial of service and\npotential disclosure of adjacent heap words. Upgrade to the fixed patch release\nfor the cryptoki 0.10, 0.11, or 0.12 line.",
  "id": "RUSTSEC-2026-0286",
  "modified": "2026-09-17T07:37:14Z",
  "published": "2026-09-16T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/cryptoki"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0286.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parallaxsecond/rust-cryptoki/pull/368"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Out-of-bounds read when decoding CKA_ALLOWED_MECHANISMS"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.