Homepage
About Snyk

CVE-2016-4020 Affecting qemu package, versions <1:2.6+dfsg-2

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Confidentiality High

    Threat Intelligence

    EPSS 0.06% (25th percentile)
Expand this section
NVD
6.5 medium
Expand this section
Red Hat
3.4 low

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-DEBIANUNSTABLE-QEMU-427748
  • published 25 May 2016
  • disclosed 25 May 2016
Report a new vulnerability Found a mistake?

Introduced: 25 May 2016

CVE-2016-4020 Open this link in a new tab

How to fix?

Upgrade Debian:unstable qemu to version 1:2.6+dfsg-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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).

References