Security advisory

{
  "id": "98eacb9e70523aae741a930faf93cc3297e6003ec3ba194be7a26c65fa826ebe",
  "url": "https://osv.dev/vulnerability/CVE-2020-14339",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-14339",
    "summary": "A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of their standard permissions, potentially causing serious damage to the host operating system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.",
    "evidence": "osv:CVE-2020-14339",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-14339",
      "aliases": [
        "CVE-2020-14339"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libvirt/libvirt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "07bb8ff4dd0ca0224754c582390f4a873597c4b9"
                },
                {
                  "fixed": "88f45e72688cec14eb58bbdb120336bbaa36a1fc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.2.0"
                      },
                      {
                        "fixed": "6.7.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.7.0-rc2",
            "v6.7.0-rc1",
            "v6.6.0",
            "CVE-2020-14339",
            "v6.6.0-rc1",
            "v6.5.0",
            "v6.5.0-rc2",
            "v6.5.0-rc1",
            "v6.4.0",
            "v6.4.0-rc1",
            "v6.3.0",
            "v6.3.0-rc1",
            "CVE-2020-14301",
            "v6.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14339.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/libvirt/libvirt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "07bb8ff4dd0ca0224754c582390f4a873597c4b9"
                },
                {
                  "fixed": "88f45e72688cec14eb58bbdb120336bbaa36a1fc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.2.0"
                      },
                      {
                        "fixed": "6.7.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.7.0-rc2",
            "v6.7.0-rc1",
            "v6.6.0",
            "CVE-2020-14339",
            "v6.6.0-rc1",
            "v6.5.0",
            "v6.5.0-rc2",
            "v6.5.0-rc1",
            "v6.4.0",
            "v6.4.0-rc1",
            "v6.3.0",
            "v6.3.0-rc1",
            "CVE-2020-14301",
            "v6.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14339.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:22.805784227Z",
      "provider": "osv",
      "references": [
        "https://security.gentoo.org/glsa/202101-22",
        "https://security.gentoo.org/glsa/202210-06",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1860069"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*"
            ],
            "vendor_product": "redhat:enterprise_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-14339",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430761,
  "published_at": "2020-12-03T17:15:12.207+00:00"
}