{"id":"UBUNTU-CVE-2014-8594","details":"The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).","modified":"2025-07-16T07:32:16.968004Z","published":"2014-11-19T18:59:00Z","upstream":["CVE-2014-8594"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2014-8594"},{"type":"REPORT","url":"http://xenbits.xen.org/xsa/advisory-109.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2014-8594"}],"affected":[{"package":{"name":"xen","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/xen@4.4.1-0ubuntu0.14.04.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.1-0ubuntu0.14.04.2"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libxen-4.4","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"libxen-dev","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"libxen-ocaml","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"libxen-ocaml-dev","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"libxenstore3.0","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-hypervisor-4.1-amd64","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-hypervisor-4.3-amd64","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-hypervisor-4.3-armhf","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-hypervisor-4.4-amd64","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-hypervisor-4.4-arm64","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-hypervisor-4.4-armhf","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-system-amd64","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-system-arm64","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-system-armhf","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-utils-4.4","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xen-utils-common","binary_version":"4.4.1-0ubuntu0.14.04.2"},{"binary_name":"xenstore-utils","binary_version":"4.4.1-0ubuntu0.14.04.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-8594.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}