{
  "schema_version": "1.4.0",
  "id": "GHSA-rf68-2835-83vw",
  "modified": "2024-04-04T01:52:18Z",
  "published": "2022-05-24T16:55:20Z",
  "aliases": [
    "CVE-2019-15847"
  ],
  "details": "The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
    }
  ],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-15847"
    },
    {
      "type": "WEB",
      "url": "https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-331"
    ],
    "severity": "HIGH",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-09-02T23:15:00Z"
  }
}