Information Exposure Affecting qemu-project/qemu package, versions [,2.7.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.06% (28th percentile)

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  • Snyk IDSNYK-UNMANAGED-QEMUPROJECTQEMU-3007054
  • published26 Jan 2022
  • disclosed25 May 2016
  • creditUnknown

Introduced: 25 May 2016

CVE-2016-4020  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade qemu-project/qemu to version 2.7.0 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. 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

CVSS Scores

version 3.1