{"id":"USN-3909-1","summary":"libvirt vulnerability","details":"It was discovered that libvirt incorrectly handled waiting for certain\nagent events. An attacker inside a guest could possibly use this issue to\ncause libvirtd to stop responding, resulting in a denial of service.\n","modified":"2026-04-22T09:54:41.258247Z","published":"2019-03-14T17:53:47Z","related":["UBUNTU-CVE-2019-3840"],"upstream":["CVE-2019-3840","UBUNTU-CVE-2019-3840"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3909-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-3840"}],"affected":[{"package":{"name":"libvirt","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libvirt@1.3.1-1ubuntu10.25?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.1-1ubuntu10.25"}]}],"versions":["1.2.16-2ubuntu11","1.2.16-2ubuntu12","1.2.16-2ubuntu13","1.2.16-2ubuntu14","1.2.21-2ubuntu1","1.2.21-2ubuntu3","1.2.21-2ubuntu4","1.2.21-2ubuntu5","1.2.21-2ubuntu7","1.2.21-2ubuntu8","1.2.21-2ubuntu9","1.2.21-2ubuntu10","1.3.1-1ubuntu1","1.3.1-1ubuntu2","1.3.1-1ubuntu3","1.3.1-1ubuntu4","1.3.1-1ubuntu6","1.3.1-1ubuntu9","1.3.1-1ubuntu10","1.3.1-1ubuntu10.1","1.3.1-1ubuntu10.2","1.3.1-1ubuntu10.3","1.3.1-1ubuntu10.5","1.3.1-1ubuntu10.6","1.3.1-1ubuntu10.7","1.3.1-1ubuntu10.8","1.3.1-1ubuntu10.10","1.3.1-1ubuntu10.11","1.3.1-1ubuntu10.12","1.3.1-1ubuntu10.13","1.3.1-1ubuntu10.14","1.3.1-1ubuntu10.15","1.3.1-1ubuntu10.17","1.3.1-1ubuntu10.18","1.3.1-1ubuntu10.19","1.3.1-1ubuntu10.21","1.3.1-1ubuntu10.22","1.3.1-1ubuntu10.23","1.3.1-1ubuntu10.24"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libvirt-bin","binary_version":"1.3.1-1ubuntu10.25"},{"binary_name":"libvirt0","binary_version":"1.3.1-1ubuntu10.25"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3909-1.json","cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2019-3840"}]}}},{"package":{"name":"libvirt","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libvirt@4.0.0-1ubuntu8.8?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.0-1ubuntu8.8"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libnss-libvirt","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-bin","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-clients","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-daemon","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-daemon-driver-storage-gluster","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-daemon-driver-storage-rbd","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-daemon-driver-storage-sheepdog","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-daemon-driver-storage-zfs","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-daemon-system","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-sanlock","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt-wireshark","binary_version":"4.0.0-1ubuntu8.8"},{"binary_name":"libvirt0","binary_version":"4.0.0-1ubuntu8.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3909-1.json","cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2019-3840"}]}}}],"schema_version":"1.7.5"}