Xen 4.7.x and earlier 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.
References
Link | Resource |
---|---|
http://www.securityfocus.com/bid/93344 | Third Party Advisory VDB Entry |
http://www.securitytracker.com/id/1036942 | Third Party Advisory VDB Entry |
http://xenbits.xen.org/xsa/advisory-190.html | Mitigation Patch Vendor Advisory |
https://support.citrix.com/article/CTX217363 | |
https://security.gentoo.org/glsa/201611-09 |
Configurations
Information
Published : 2016-10-07 07:59
Updated : 2017-06-30 18:30
NVD link : CVE-2016-7777
Mitre link : CVE-2016-7777
JSON object : View
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Products Affected
xen
- xen