{"id":"UBUNTU-CVE-2016-4962","details":"The libxl device-handling in Xen 4.6.x and earlier allows local OS guest administrators to cause a denial of service (resource consumption or management facility confusion) or gain host OS privileges by manipulating information in guest controlled areas of xenstore.","modified":"2026-04-22T11:16:31.330727Z","published":"2016-06-07T14:06:00Z","upstream":["CVE-2016-4962"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-4962"},{"type":"REPORT","url":"http://xenbits.xen.org/xsa/advisory-175.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-4962"}],"affected":[{"package":{"name":"xen","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/xen@4.4.2-0ubuntu0.14.04.6?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.2-0ubuntu0.14.04.6"}]}],"versions":["4.3.0-1ubuntu1","4.3.0-1ubuntu2","4.3.0-1ubuntu3","4.3.0-1ubuntu4","4.3.0-1ubuntu5","4.4.0-0ubuntu3","4.4.0-0ubuntu4","4.4.0-0ubuntu5","4.4.0-0ubuntu5.1","4.4.0-0ubuntu5.2","4.4.1-0ubuntu0.14.04.1","4.4.1-0ubuntu0.14.04.2","4.4.1-0ubuntu0.14.04.3","4.4.1-0ubuntu0.14.04.4","4.4.1-0ubuntu0.14.04.5","4.4.1-0ubuntu0.14.04.6","4.4.2-0ubuntu0.14.04.1","4.4.2-0ubuntu0.14.04.2","4.4.2-0ubuntu0.14.04.3","4.4.2-0ubuntu0.14.04.4","4.4.2-0ubuntu0.14.04.5"],"ecosystem_specific":{"binaries":[{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"libxen-4.4"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"libxen-ocaml"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"libxenstore3.0"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-hypervisor-4.1-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-hypervisor-4.3-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-hypervisor-4.3-armhf"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-hypervisor-4.4-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-hypervisor-4.4-arm64"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-hypervisor-4.4-armhf"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-system-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-system-arm64"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-system-armhf"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-utils-4.4"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xen-utils-common"},{"binary_version":"4.4.2-0ubuntu0.14.04.6","binary_name":"xenstore-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4962.json"}},{"package":{"name":"xen","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/xen@4.6.0-1ubuntu4.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.0-1ubuntu4.1"}]}],"versions":["4.5.1-0ubuntu1","4.5.1-0ubuntu2","4.6.0-1ubuntu1","4.6.0-1ubuntu2","4.6.0-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"libxen-4.6"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"libxenstore3.0"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.4-amd64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.4-arm64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.4-armhf"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.5-amd64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.5-arm64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.5-armhf"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.6-amd64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.6-arm64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-hypervisor-4.6-armhf"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-system-amd64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-system-arm64"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-system-armhf"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-utils-4.6"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xen-utils-common"},{"binary_version":"4.6.0-1ubuntu4.1","binary_name":"xenstore-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4962.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}