CVE-2016-3159

CVE Details

Release Date:

2016-03-24

Description

The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does notproperly 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.

See more information about CVE-2016-3159 from MITRE CVE dictionary and NIST NVD

CVSS v2.0 metrics

NOTE: The following CVSS v2.0 metrics and score provided are preliminary and subject to review.

Base Score:	3.8	Base Metrics:	AV:A/AC:M/Au:S/C:P/I:P/A:N
Access Vector:	Adjacent network	Attack Complexity:	Medium
Authentication:	Requires single instance	Confidentiality Impact:	Partial
Integrity Impact:	Partial	Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle VM version 3.3 (xen)	OVMSA-2016-0089	2016-07-27
Oracle VM version 3.4 (xen)	OVMSA-2016-0088	2016-07-27

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team