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VULNERABILITIES

CVE-2016-4020 Details

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

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0 CVE
https://access.redhat.com/errata/RHSA-2017:1856 CVEThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:2392 CVEThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:2408 CVEThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1313686 CVEIssue TrackingThird Party Advisory

see all 22 references

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]

Affected Products

ProductVersions

Change History

20 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2016-4020
NVD Published Date:
May 25, 2016
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2016-4020 Details - Not Deferred