CVE-2016-9932

LOW

Xen 3.3.x-4.7.x - Unauthorized Sensitive Information Exposure via CMPXCHG8B Emulation

Title source: llm
STIX 2.1

Description

CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.

References (6)

Core 6
Core References
Patch, Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-200.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201612-56
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2017/dsa-3847
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1037468
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/94863
Vendor Advisory x_refsource_confirm
https://support.citrix.com/article/CTX219378

Scores

CVSS v3 3.3
EPSS 0.0007
EPSS Percentile 21.2%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Details

CWE
CWE-200
Status published
Products (45)
xen/xen 3.3.0
xen/xen 3.3.1
xen/xen 3.3.2
xen/xen 3.4.0
xen/xen 3.4.1
xen/xen 3.4.2
xen/xen 3.4.3
xen/xen 3.4.4
xen/xen 4.0.0
xen/xen 4.0.1
... and 35 more
Published Jan 26, 2017
Tracked Since Feb 18, 2026