Skip to content
Heist/ feed
Back to feed
UnratedFix available

Safe ErrorRegistry APIs can cause undefined behavior

Type: advisorySources: OSV

All published versions of `dcrypt-api` before 2.0.0 exposed safe `ErrorRegistry` operations that could trigger undefined behavior when the default `std` feature was enabled. Stored `Box` values were erased to raw pointers and later deallocated as `Box<()>`. The `get_error` operation also performed an unchecked cast to a caller-selected type. Finally, concurrent replacement or clearing could free a value while another thread cloned it. Ordinary safe Rust could therefore cause mismatched deallocation, type confusion, and use-after-free. Crates that re-exported this API are affected transitively. Version 2.0.0 replaces the raw pointers with owned `Box` values behind a mutex, performs checked downcasts, and uses a mutation generation so concurrent stores and clears win safely. There is no reliable workaround while calling the affected registry API. Upgrade to 2.0.0 or later and avoid process-global error state where possible.

Products
dcrypt-api
Affected versions
Not specified
Fixed versions
2.0.0
CVEs
Not specified
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 08:44 UTC · Revision 1

Source evidence

Safe ErrorRegistry APIs can cause undefined behavior

core-osv · Original source

Published 9 Aug 2026, 12:00 UTC

All published versions of `dcrypt-api` before 2.0.0 exposed safe `ErrorRegistry` operations that could trigger undefined behavior when the default `std` feature was enabled. Stored `Box` values were erased to raw pointers and later deallocated as `Box<()>`. The `get_error` operation also performed an unchecked cast to a caller-selected type. Finally, concurrent replacement or clearing could free a value while another thread cloned it. Ordinary safe Rust could therefore cause mismatched deallocation, type confusion, and use-after-free. Crates that re-exported this API are affected transitively. Version 2.0.0 replaces the raw pointers with owned `Box` values behind a mutex, performs checked downcasts, and uses a mutation generation so concurrent stores and clears win safely. There is no reliable workaround while calling the affected registry API. Upgrade to 2.0.0 or later and avoid process-global error state where possible.

osv:RUSTSEC-2026-0242

dcrypt-api

Fixed versions: 2.0.0

Complete source record
{
  "id": "c6719ac41605184be012bdd953691df178b2f0b8c032a6d614c505fbe05b4b35",
  "url": "https://osv.dev/vulnerability/RUSTSEC-2026-0242",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Safe ErrorRegistry APIs can cause undefined behavior",
    "summary": "All published versions of `dcrypt-api` before 2.0.0 exposed safe `ErrorRegistry` operations that could trigger undefined behavior when the default `std` feature was enabled. Stored `Box` values were erased to raw pointers and later deallocated as `Box<()>`. The `get_error` operation also performed an unchecked cast to a caller-selected type. Finally, concurrent replacement or clearing could free a value while another thread cloned it. Ordinary safe Rust could therefore cause mismatched deallocation, type confusion, and use-after-free. Crates that re-exported this API are affected transitively. Version 2.0.0 replaces the raw pointers with owned `Box` values behind a mutex, performs checked downcasts, and uses a mutation generation so concurrent stores and clears win safely. There is no reliable workaround while calling the affected registry API. Upgrade to 2.0.0 or later and avoid process-global error state where possible.",
    "evidence": "osv:RUSTSEC-2026-0242",
    "products": [
      {
        "name": {
          "value": "dcrypt-api",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.0.0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "RUSTSEC-2026-0242",
      "aliases": [
        "GHSA-7hc7-h3f2-r4j6",
        "RUSTSEC-2026-0242"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0.0.0-0"
                },
                {
                  "fixed": "2.0.0"
                }
              ]
            }
          ],
          "package": {
            "name": "dcrypt-api",
            "purl": "pkg:cargo/dcrypt-api",
            "ecosystem": "crates.io"
          },
          "database_specific": {
            "cvss": null,
            "source": "https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0242.json",
            "categories": [
              "memory-corruption",
              "thread-safety"
            ],
            "informational": null
          },
          "ecosystem_specific": {
            "affects": {
              "os": [],
              "arch": [],
              "functions": []
            },
            "affected_functions": null
          }
        }
      ],
      "modified": "2026-10-12T18:00:14.905021984Z",
      "provider": "osv",
      "references": [
        "https://crates.io/crates/dcrypt-api",
        "https://rustsec.org/advisories/RUSTSEC-2026-0242.html",
        "https://github.com/ioi-foundation/dcrypt/commit/c99cc86f0ee353010cd202cbcd2c310371b0bbb8",
        "https://github.com/ioi-foundation/dcrypt/releases/tag/v2.0.0"
      ],
      "provider_metadata": {
        "license": "CC0-1.0"
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 306465,
  "published_at": "2026-08-09T12:00:00+00:00"
}