{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.1.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b143e1b1b5622ef2f41a90f4c0f7ed4c477caf40"
            }
          ],
          "repo": "https://github.com/radare/radare2",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9b46d38dd3c4de6048a488b655c7319f845af185"
            }
          ],
          "repo": "https://github.com/radareorg/radare2",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "In radare2 prior to 3.1.1, the parseOperand function inside libr/asm/p/asm_x86_nz.c may allow attackers to cause a denial of service (application crash in libr/util/strbuf.c via a stack-based buffer over-read) by crafting an input file, a related issue to CVE-2018-20455.",
  "id": "CVE-2018-20456",
  "modified": "2026-03-13T21:47:29.342568507Z",
  "published": "2018-12-25T19:29:00.290Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/radare/radare2/commit/9b46d38dd3c4de6048a488b655c7319f845af185"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/radare/radare2/issues/12372"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}