{"id":"UBUNTU-CVE-2016-1570","details":"The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.","modified":"2025-09-08T16:43:36Z","published":"2016-01-22T15:59:00Z","upstream":["CVE-2016-1570"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-1570"},{"type":"REPORT","url":"http://xenbits.xen.org/xsa/advisory-167.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-1570"}],"affected":[{"package":{"name":"xen","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/xen@4.4.2-0ubuntu0.14.04.5?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.2-0ubuntu0.14.04.5"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxen-4.4","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"libxen-dev","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"libxen-ocaml","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"libxen-ocaml-dev","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"libxenstore3.0","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-hypervisor-4.1-amd64","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-hypervisor-4.3-amd64","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-hypervisor-4.3-armhf","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-hypervisor-4.4-amd64","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-hypervisor-4.4-arm64","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-hypervisor-4.4-armhf","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-system-amd64","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-system-arm64","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-system-armhf","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-utils-4.4","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xen-utils-common","binary_version":"4.4.2-0ubuntu0.14.04.5"},{"binary_name":"xenstore-utils","binary_version":"4.4.2-0ubuntu0.14.04.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-1570.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}