{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "xcb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-666",
      "CWE-672"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-08-22T17:34:45Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "The API of `xcb::Connection` has constructors which allow an arbitrary `RawFd` to be used as a socket connection. On either failure of these constructors or on the drop of `Connection`, it closes the associated file descriptor. Thus, a program which uses an `OwnedFd` (such as a `UnixStream`) as the file descriptor can close the file descriptor and continue to attempt using it or close an already-closed file descriptor, violating I/O safety.\n\nStarting in version 1.6.0, `xcb` provides `Connection::connect_with_fd` and `Connection::connect_with_fd_and_extensions` as safe alternatives and deprecates the problematic functions.",
  "id": "GHSA-655h-hg88-5qmf",
  "modified": "2025-08-22T17:34:45Z",
  "published": "2025-08-22T17:34:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rust-x-bindings/rust-xcb/issues/167"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-x-bindings/rust-xcb/issues/282"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-x-bindings/rust-xcb/pull/283"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rustsec/advisory-db/pull/2355"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-x-bindings/rust-xcb/commit/da830976870c1174e3b33eb0643177be3991c002"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-x-bindings/rust-xcb"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2025-0051.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Rust XCB `xcb::Connection::connect_to_fd*` functions violate I/O safety"
}