The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.
References
Link | Resource |
---|---|
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.html | Mailing List Third Party Advisory |
http://www.securitytracker.com/id/1035435 | Third Party Advisory VDB Entry |
http://xenbits.xen.org/xsa/xsa172.patch | Patch Vendor Advisory |
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.html | Mailing List Third Party Advisory |
http://xenbits.xen.org/xsa/advisory-172.html | Patch Vendor Advisory |
http://www.securityfocus.com/bid/85716 | Third Party Advisory VDB Entry |
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html | Third Party Advisory |
http://support.citrix.com/article/CTX209443 | Third Party Advisory |
http://www.debian.org/security/2016/dsa-3554 | Third Party Advisory |
Configurations
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History
No history.
Information
Published : 2016-04-13 16:59
Updated : 2019-02-21 17:42
NVD link : CVE-2016-3159
Mitre link : CVE-2016-3159
JSON object : View
Products Affected
debian
- debian_linux
oracle
- vm_server
fedoraproject
- fedora
xen
- xen