CVEvulnerability
CVE-2016-7777
6.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2016-10-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 6.3 MEDIUM — CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- CVSS 2.0 ([email protected])
- 3.3 LOW — AV:L/AC:M/Au:N/C:P/I:P/A:N
- Weaknesses
- CWE-362
Description
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.
Affected configurations
• xen xen (<= 4.7.0)
Related
Weakness · CWE (1)
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
References
- 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://security.gentoo.org/glsa/201611-09 security.gentoo.org
- https://support.citrix.com/article/CTX217363 support.citrix.com
- 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://security.gentoo.org/glsa/201611-09 security.gentoo.org
- https://support.citrix.com/article/CTX217363 support.citrix.com