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prionPRIOn knowledge basePRION:CVE-2016-3158
HistoryApr 13, 2016 - 4:59 p.m.

Information disclosure

2016-04-1316:59:00
PRIOn knowledge base
www.prio-n.com
12

3.9 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

41.6%

The xrstor function in arch/x86/xstate.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.

CPENameOperatorVersion
fedoraeq22
fedoraeq23
vm_servereq3.4
vm_servereq3.3
xenle4.4.0

3.9 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

41.6%