Security advisory

{
  "id": "a84aea35440a34ed38e0b1e5d59f067cb68c244b82258dddd7c5368c7add24e0",
  "url": "https://osv.dev/vulnerability/CVE-2021-4022",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-4022",
    "summary": "A vulnerability was found in rizin. The bug involves an ELF64 binary for the HPPA architecture. When a specially crafted binarygets analysed by rizin, it causes rizin to crash by freeing an uninitialized (and potentially user controlled, depending on the build) memory address.",
    "evidence": "osv:CVE-2021-4022",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-4022",
      "aliases": [
        "CVE-2021-4022"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/rizinorg/rizin",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "6ef55aa63a563864774f4777dcd1a69933b62a72"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:rizin:rizin:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.1",
            "v0.3.0",
            "v0.2.1",
            "v0.2.0",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0",
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4022.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:55.772228496Z",
      "provider": "osv",
      "references": [
        "https://github.com/rizinorg/rizin/issues/2015"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-4022",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386474,
  "published_at": "2022-08-25T18:15:09.443+00:00"
}