Vulnerability-Lookup

UBUNTU-CVE-2021-3667 (CVE-2021-3667)

Vulnerability from osv_ubuntu – Published: 2022-03-02 23:15 – Updated: 2026-04-22 07:39 – Source website

Details

An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2021-3667	REPORT
	https://ubuntu.com/security/notices/USN-5399-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2021-3667	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-libvirt",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-clients",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-lxc",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-qemu",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-vbox",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-xen",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-system-systemd",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-system-sysv",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-sanlock",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-wireshark",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "6.0.0-0ubuntu8.16"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@6.0.0-0ubuntu8.16?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.0-0ubuntu8.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-0ubuntu5",
        "6.0.0-0ubuntu1",
        "6.0.0-0ubuntu2",
        "6.0.0-0ubuntu3",
        "6.0.0-0ubuntu4",
        "6.0.0-0ubuntu5",
        "6.0.0-0ubuntu6",
        "6.0.0-0ubuntu7",
        "6.0.0-0ubuntu8",
        "6.0.0-0ubuntu8.1",
        "6.0.0-0ubuntu8.2",
        "6.0.0-0ubuntu8.3",
        "6.0.0-0ubuntu8.4",
        "6.0.0-0ubuntu8.5",
        "6.0.0-0ubuntu8.7",
        "6.0.0-0ubuntu8.8",
        "6.0.0-0ubuntu8.9",
        "6.0.0-0ubuntu8.10",
        "6.0.0-0ubuntu8.11",
        "6.0.0-0ubuntu8.12",
        "6.0.0-0ubuntu8.13",
        "6.0.0-0ubuntu8.14",
        "6.0.0-0ubuntu8.15"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-libvirt",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-clients",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-config-network",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-config-nwfilter",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-lxc",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-qemu",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-iscsi-direct",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-vbox",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-driver-xen",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-system-systemd",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-daemon-system-sysv",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-login-shell",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-sanlock",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt-wireshark",
            "binary_version": "7.6.0-0ubuntu3"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "7.6.0-0ubuntu3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@7.6.0-0ubuntu3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.6.0-0ubuntu3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.6.0-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.",
  "id": "UBUNTU-CVE-2021-3667",
  "modified": "2026-04-22T07:39:48Z",
  "published": "2022-03-02T23:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3667"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5399-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3667"
    }
  ],
  "related": [
    "USN-5399-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-3667"
  ]
}

CVE-2021-3667 (GCVE-0-2021-3667)

Vulnerability from cvelistv5 – Published: 2022-03-02 00:00 – Updated: 2025-02-13 16:28

Summary

Severity

No CVSS data available.

CWE

CWE-667 - (improper Locking)

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1072 records in the last 180 days details

References

6 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1986094
https://libvirt.org/git/?p=libvirt.git%3Ba=commit…
https://gitlab.com/libvirt/libvirt/-/commit/447f6…
https://security.netapp.com/advisory/ntap-2022033…
https://security.gentoo.org/glsa/202210-06	vendor-advisory
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
n/a	libvirt	Affected: Fixedin - libvert v7.6.0-rc1 and above

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:08.343Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1986094"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20220331-0005/"
          },
          {
            "name": "GLSA-202210-06",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202210-06"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libvirt",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fixedin - libvert v7.6.0-rc1 and above"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-667",
              "description": "CWE-667  (improper Locking)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-04-01T13:05:54.437Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1986094"
        },
        {
          "url": "https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87"
        },
        {
          "url": "https://gitlab.com/libvirt/libvirt/-/commit/447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20220331-0005/"
        },
        {
          "name": "GLSA-202210-06",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202210-06"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3667",
    "datePublished": "2022-03-02T00:00:00.000Z",
    "dateReserved": "2021-07-27T00:00:00.000Z",
    "dateUpdated": "2025-02-13T16:28:25.782Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

USN-5399-1 (UBUNTU-CVE-2020-25637)

Vulnerability from osv_ubuntu – Published: 2022-05-02 17:01 – Updated: 2026-04-27 14:11 – Source website

Summary

libvirt vulnerabilities

Details

It was discovered that libvirt incorrectly handled certain locking operations. A local attacker could possibly use this issue to cause libvirt to stop accepting connections, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-3667)

It was discovered that libvirt incorrectly handled threads during shutdown. A local attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-3975)

It was discovered that libvirt incorrectly handled the libxl driver. An attacker inside a guest could possibly use this issue to cause libvirtd to crash or stop responding, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.10. (CVE-2021-4147)

It was discovered that libvirt incorrectly handled the nwfilter driver. A local attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. (CVE-2022-0897)

It was discovered that libvirt incorrectly handled the polkit access control driver. A local attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-25637)

It was discovered that libvirt incorrectly generated SELinux labels. In environments using SELinux, this issue could allow the sVirt confinement to be bypassed. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-3631)

References

URL

Type

	https://ubuntu.com/security/notices/USN-5399-1	ADVISORY
	https://ubuntu.com/security/CVE-2020-25637	REPORT
	https://ubuntu.com/security/CVE-2021-3631	REPORT
	https://ubuntu.com/security/CVE-2021-3667	REPORT
	https://ubuntu.com/security/CVE-2021-3975	REPORT
	https://ubuntu.com/security/CVE-2021-4147	REPORT
	https://ubuntu.com/security/CVE-2022-0897	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25637",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3631",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3975",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-4147",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-0897",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-libvirt",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-bin",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-clients",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-daemon",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-sheepdog",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-sanlock",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt-wireshark",
            "binary_version": "4.0.0-1ubuntu8.21"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "4.0.0-1ubuntu8.21"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@4.0.0-1ubuntu8.21?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-1ubuntu8.21"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0-1ubuntu5",
        "3.6.0-1ubuntu6",
        "4.0.0-1ubuntu1",
        "4.0.0-1ubuntu2",
        "4.0.0-1ubuntu3",
        "4.0.0-1ubuntu4",
        "4.0.0-1ubuntu5",
        "4.0.0-1ubuntu6",
        "4.0.0-1ubuntu7",
        "4.0.0-1ubuntu8",
        "4.0.0-1ubuntu8.1",
        "4.0.0-1ubuntu8.2",
        "4.0.0-1ubuntu8.3",
        "4.0.0-1ubuntu8.4",
        "4.0.0-1ubuntu8.5",
        "4.0.0-1ubuntu8.6",
        "4.0.0-1ubuntu8.7",
        "4.0.0-1ubuntu8.8",
        "4.0.0-1ubuntu8.9",
        "4.0.0-1ubuntu8.10",
        "4.0.0-1ubuntu8.11",
        "4.0.0-1ubuntu8.12",
        "4.0.0-1ubuntu8.13",
        "4.0.0-1ubuntu8.14",
        "4.0.0-1ubuntu8.15",
        "4.0.0-1ubuntu8.16",
        "4.0.0-1ubuntu8.17",
        "4.0.0-1ubuntu8.19",
        "4.0.0-1ubuntu8.20"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25637",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3631",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3667",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3975",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-4147",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-0897",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-libvirt",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-clients",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-lxc",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-qemu",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-vbox",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-driver-xen",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-system-systemd",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-daemon-system-sysv",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-sanlock",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt-wireshark",
            "binary_version": "6.0.0-0ubuntu8.16"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "6.0.0-0ubuntu8.16"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@6.0.0-0ubuntu8.16?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.0-0ubuntu8.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-0ubuntu5",
        "6.0.0-0ubuntu1",
        "6.0.0-0ubuntu2",
        "6.0.0-0ubuntu3",
        "6.0.0-0ubuntu4",
        "6.0.0-0ubuntu5",
        "6.0.0-0ubuntu6",
        "6.0.0-0ubuntu7",
        "6.0.0-0ubuntu8",
        "6.0.0-0ubuntu8.1",
        "6.0.0-0ubuntu8.2",
        "6.0.0-0ubuntu8.3",
        "6.0.0-0ubuntu8.4",
        "6.0.0-0ubuntu8.5",
        "6.0.0-0ubuntu8.7",
        "6.0.0-0ubuntu8.8",
        "6.0.0-0ubuntu8.9",
        "6.0.0-0ubuntu8.10",
        "6.0.0-0ubuntu8.11",
        "6.0.0-0ubuntu8.12",
        "6.0.0-0ubuntu8.13",
        "6.0.0-0ubuntu8.14",
        "6.0.0-0ubuntu8.15"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that libvirt incorrectly handled certain locking\noperations. A local attacker could possibly use this issue to cause libvirt\nto stop accepting connections, resulting in a denial of service. This issue\nonly affected Ubuntu 20.04 LTS. (CVE-2021-3667)\n\nIt was discovered that libvirt incorrectly handled threads during shutdown.\nA local attacker could possibly use this issue to cause libvirt to crash,\nresulting in a denial of service. This issue only affected Ubuntu 18.04 LTS\nand Ubuntu 20.04 LTS. (CVE-2021-3975)\n\nIt was discovered that libvirt incorrectly handled the libxl driver. An\nattacker inside a guest could possibly use this issue to cause libvirtd\nto crash or stop responding, resulting in a denial of service. This issue\nonly affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.10.\n(CVE-2021-4147)\n\nIt was discovered that libvirt incorrectly handled the nwfilter driver. A\nlocal attacker could possibly use this issue to cause libvirt to crash,\nresulting in a denial of service. (CVE-2022-0897)\n\nIt was discovered that libvirt incorrectly handled the polkit access\ncontrol driver. A local attacker could possibly use this issue to cause\nlibvirt to crash, resulting in a denial of service. This issue only\naffected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-25637)\n\nIt was discovered that libvirt incorrectly generated SELinux labels. In\nenvironments using SELinux, this issue could allow the sVirt confinement\nto be bypassed. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04\nLTS. (CVE-2021-3631)\n",
  "id": "USN-5399-1",
  "modified": "2026-04-27T14:11:28Z",
  "published": "2022-05-02T17:01:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5399-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25637"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3631"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3667"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3975"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-4147"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-0897"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libvirt vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-25637",
    "UBUNTU-CVE-2021-3631",
    "UBUNTU-CVE-2021-3667",
    "UBUNTU-CVE-2021-3975",
    "UBUNTU-CVE-2021-4147",
    "UBUNTU-CVE-2022-0897"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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UBUNTU-CVE-2021-3667 (CVE-2021-3667)

CVE-2021-3667 (GCVE-0-2021-3667)

USN-5399-1 (UBUNTU-CVE-2020-25637)

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