Security advisory

{
  "id": "f122d064862b335e63c259b12d313fd3fd5ef6a1aa668eacf44cfc8c3b40846c",
  "url": "https://osv.dev/vulnerability/CVE-2020-10717",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-10717",
    "summary": "A potential DoS flaw was found in the virtio-fs shared file system daemon (virtiofsd) implementation of the QEMU version >= v5.0. Virtio-fs is meant to share a host file system directory with a guest via virtio-fs device. If the guest opens the maximum number of file descriptors under the shared directory, a denial of service may occur. This flaw allows a guest user/process to cause this denial of service on the host.",
    "evidence": "osv:CVE-2020-10717",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-10717",
      "aliases": [
        "CVE-2020-10717"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/qemu/qemu",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fdd76fecdde1ad444ff4deb7f1c4f7e4a1ef97d6"
                },
                {
                  "fixed": "386b2a5767f7642521cd07930c681ec8a6057e60"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0"
                      },
                      {
                        "fixed": "5.0.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v5.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10717.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/qemu-project/qemu",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fdd76fecdde1ad444ff4deb7f1c4f7e4a1ef97d6"
                },
                {
                  "fixed": "386b2a5767f7642521cd07930c681ec8a6057e60"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0"
                      },
                      {
                        "fixed": "5.0.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v5.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10717.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:38.693292224Z",
      "provider": "osv",
      "references": [
        "https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg00141.html",
        "https://security.gentoo.org/glsa/202011-09",
        "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10717",
        "https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg00143.html",
        "https://www.openwall.com/lists/oss-security/2020/05/04/1"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-10717",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434517,
  "published_at": "2020-05-04T21:15:11.88+00:00"
}