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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2016-4020 Detail

Description

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0 CVE, Inc., Red Hat
http://www.securityfocus.com/bid/86067 CVE, Inc., Red Hat Third Party Advisory  VDB Entry 
http://www.ubuntu.com/usn/USN-2974-1 CVE, Inc., Red Hat Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:1856 CVE, Inc., Red Hat Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:2392 CVE, Inc., Red Hat Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:2408 CVE, Inc., Red Hat Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=1313686 CVE, Inc., Red Hat Issue Tracking  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html CVE, Inc., Red Hat Mailing List  Third Party Advisory 
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01106.html CVE, Inc., Red Hat Patch  Third Party Advisory 
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01118.html CVE, Inc., Red Hat Patch  Third Party Advisory 
https://security.gentoo.org/glsa/201609-01 CVE, Inc., Red Hat Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

18 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-4020
NVD Published Date:
05/25/2016
NVD Last Modified:
04/12/2025
Source:
Red Hat, Inc.