Low severity3.8NVD Advisory· Published Apr 13, 2016· Updated May 6, 2026
CVE-2016-3159
CVE-2016-3159
Description
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.
Affected products
6cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*
- cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
9- xenbits.xen.org/xsa/advisory-172.htmlnvdPatchVendor Advisory
- xenbits.xen.org/xsa/xsa172.patchnvdPatchVendor Advisory
- lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.htmlnvdMailing ListThird Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.htmlnvdMailing ListThird Party Advisory
- support.citrix.com/article/CTX209443nvdThird Party Advisory
- www.debian.org/security/2016/dsa-3554nvdThird Party Advisory
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlnvdThird Party Advisory
- www.securityfocus.com/bid/85716nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1035435nvdThird Party AdvisoryVDB Entry
News mentions
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