{"id":"UBUNTU-CVE-2015-7813","details":"Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of (1) HYPERVISOR_physdev_op hypercalls, which are not properly handled in the do_physdev_op function in arch/arm/physdev.c, or (2) HYPERVISOR_hvm_op hypercalls, which are not properly handled in the do_hvm_op function in arch/arm/hvm.c.","modified":"2025-09-08T16:43:28Z","published":"2015-10-30T15:59:00Z","upstream":["CVE-2015-7813"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-7813"},{"type":"REPORT","url":"http://xenbits.xen.org/xsa/advisory-146.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-7813"}],"affected":[{"package":{"name":"xen","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/xen@4.4.2-0ubuntu0.14.04.3?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.2-0ubuntu0.14.04.3"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"libxen-4.4"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"libxen-dev"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"libxen-ocaml"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"libxen-ocaml-dev"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"libxenstore3.0"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-hypervisor-4.1-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-hypervisor-4.3-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-hypervisor-4.3-armhf"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-hypervisor-4.4-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-hypervisor-4.4-arm64"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-hypervisor-4.4-armhf"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-system-amd64"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-system-arm64"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-system-armhf"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-utils-4.4"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xen-utils-common"},{"binary_version":"4.4.2-0ubuntu0.14.04.3","binary_name":"xenstore-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-7813.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"low"}]}