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prionPRIOn knowledge basePRION:CVE-2016-3159
HistoryApr 13, 2016 - 4:59 p.m.

Design/Logic Flaw

2016-04-1316:59:00
PRIOn knowledge base
www.prio-n.com
6

3.9 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

40.3%

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.

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3.9 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

40.3%