{"id":"UBUNTU-CVE-2014-9066","details":"Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service (write denial or NMI watchdog timeout and host crash) via a large number of read requests, a different vulnerability than CVE-2014-9065.","modified":"2025-07-16T08:17:17.507234Z","published":"2014-12-09T23:59:00Z","upstream":["CVE-2014-9066"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2014-9066"},{"type":"REPORT","url":"http://xenbits.xen.org/xsa/advisory-114.html"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2014/12/08/4"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2014-9066"}],"affected":[{"package":{"name":"xen","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/xen@4.4.1-0ubuntu0.14.04.4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.1-0ubuntu0.14.04.4"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxen-4.4","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"libxen-dev","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"libxen-ocaml","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"libxen-ocaml-dev","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"libxenstore3.0","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-hypervisor-4.1-amd64","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-hypervisor-4.3-amd64","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-hypervisor-4.3-armhf","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-hypervisor-4.4-amd64","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-hypervisor-4.4-arm64","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-hypervisor-4.4-armhf","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-system-amd64","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-system-arm64","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-system-armhf","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-utils-4.4","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xen-utils-common","binary_version":"4.4.1-0ubuntu0.14.04.4"},{"binary_name":"xenstore-utils","binary_version":"4.4.1-0ubuntu0.14.04.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-9066.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}