CVE-2016-4020 Affecting qemu-img package, versions <10:1.5.3-141.el7


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.06% (27th percentile)

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  • Snyk IDSNYK-ORACLE7-QEMUIMG-2517403
  • published10 Apr 2022
  • disclosed25 May 2016

Introduced: 25 May 2016

CVE-2016-4020  (opens in a new tab)

How to fix?

Upgrade Oracle:7 qemu-img to version 10:1.5.3-141.el7 or higher.
This issue was patched in ELSA-2017-1856.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Oracle. See How to fix? for Oracle:7 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).

CVSS Scores

version 3.1