Security advisory

{
  "id": "c29c283b6a0c19376fdccf9da54cf952e26451df09c412931a825e8e4a7dddf8",
  "url": "https://osv.dev/vulnerability/CVE-2018-18438",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-18438",
    "summary": "Qemu has integer overflows because IOReadHandler and its associated functions use a signed integer data type for a size value.",
    "evidence": "osv:CVE-2018-18438",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-18438",
      "aliases": [
        "CVE-2018-18438"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/qemu/qemu",
              "type": "GIT",
              "events": [
                {
                  "introduced": "609d7596524ab204ccd71ef42c9eee4c7c338ea4"
                },
                {
                  "last_affected": "823a3f11fb8f04c3c3cc0f95f968fef1bfc6534f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.0"
                      },
                      {
                        "last_affected": "6.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0"
                      },
                      {
                        "last_affected": "7.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.0",
            "7.0",
            "v7.0.0",
            "v7.0.0-rc4",
            "v7.0.0-rc3",
            "v7.0.0-rc2",
            "v7.0.0-rc1",
            "v7.0.0-rc0",
            "v6.2.0",
            "v6.2.0-rc4",
            "v6.1.0",
            "v6.2.0-rc3",
            "v6.2.0-rc1",
            "v6.2.0-rc0",
            "v6.0.0",
            "v6.1.0-rc4",
            "v6.1.0-rc3",
            "v6.1.0-rc2",
            "v6.1.0-rc1",
            "v6.1.0-rc0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18438.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:18.091701569Z",
      "provider": "osv",
      "references": [
        "https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02396.html",
        "https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02402.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*",
              "cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:*",
              "cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*",
              "cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*",
              "cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:openstack",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8"
                  },
                  {
                    "last_affected": "8"
                  },
                  {
                    "introduced": "9"
                  },
                  {
                    "last_affected": "9"
                  },
                  {
                    "introduced": "10"
                  },
                  {
                    "last_affected": "10"
                  },
                  {
                    "introduced": "12"
                  },
                  {
                    "last_affected": "12"
                  },
                  {
                    "introduced": "13"
                  },
                  {
                    "last_affected": "13"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-18438",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429694,
  "published_at": "2018-10-19T22:29:02.287+00:00"
}