CVE-2016-4020

CVE Details

Release Date:

2016-04-07

Description

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does notinitialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).

See more information about CVE-2016-4020 from MITRE CVE dictionary and NIST NVD

CVSS v2.0 metrics

NOTE: The following CVSS v2.0 metrics and score provided are preliminary and subject to review.

Base Score:	2.9	Base Metrics:	AV:A/AC:M/Au:N/C:P/I:N/A:N
Access Vector:	Adjacent network	Attack Complexity:	Medium
Authentication:	None required	Confidentiality Impact:	Partial
Integrity Impact:	None	Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (qemu-kvm)	ELSA-2017-1856	2017-08-07

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