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).
Advisories
Source ID Title
Debian DLA Debian DLA DLA-573-1 qemu security update
Debian DLA Debian DLA DLA-1599-1 qemu security update
EUVD EUVD EUVD-2016-5026 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).
Ubuntu USN Ubuntu USN USN-2974-1 QEMU vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T00:17:30.133Z

Reserved: 2016-04-14T00:00:00

Link: CVE-2016-4020

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2016-05-25T15:59:04.927

Modified: 2025-04-12T10:46:40.837

Link: CVE-2016-4020

cve-icon Redhat

Severity : Low

Publid Date: 2016-04-07T00:00:00Z

Links: CVE-2016-4020 - Bugzilla

cve-icon OpenCVE Enrichment

No data.