Package : xen Version : 4.1.6.lts1-3 CVE ID : CVE-2016-7777
Xen does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it. For Debian 7 "Wheezy", these problems have been fixed in version 4.1.6.lts1-3. We recommend that you upgrade your xen packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS
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