CVE-2016-3159

Published Apr 13, 2016

Last updated 6 years ago

Overview

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.
Source
cve@mitre.org
NVD status
Analyzed

Social media

Hype score
Not currently trending

Risk scores

CVSS 3.0

Type
Primary
Base score
3.8
Impact score
1.4
Exploitability score
2
Vector string
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Severity
LOW

CVSS 2.0

Type
Primary
Base score
1.7
Impact score
2.9
Exploitability score
3.1
Vector string
AV:L/AC:L/Au:S/C:P/I:N/A:N

Weaknesses

nvd@nist.gov
CWE-200

Configurations