PT-2016-1713 · Amd+1 · Xen+1
Jan Beulich
·
Publicado
2016-04-13
·
Atualizado
2019-02-21
·
CVE-2016-3159
CVSS v3.1
3.8
Baixa
| Vetor | AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Xen versions 4.x
Description
The issue is related to the fpu fxrstor function in arch/x86/i387.c, which does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors. This allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits, such as the
exception and mask bits. The problem arises due to insufficient access control.Recommendations
For Xen version 4.x, at the moment, there is no information about a newer version that contains a fix for this vulnerability.
Improper Access Control
Information Disclosure
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Identificadores relacionados
Produtos afetados
Suse
Xen