CVE - CVE-2016-4020

CVE-ID
CVE-2016-4020	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:86067 URL:http://www.securityfocus.com/bid/86067 MISC:GLSA-201609-01 URL:https://security.gentoo.org/glsa/201609-01 MISC:RHSA-2017:1856 URL:https://access.redhat.com/errata/RHSA-2017:1856 MISC:RHSA-2017:2392 URL:https://access.redhat.com/errata/RHSA-2017:2392 MISC:RHSA-2017:2408 URL:https://access.redhat.com/errata/RHSA-2017:2408 MISC:USN-2974-1 URL:http://www.ubuntu.com/usn/USN-2974-1 MISC:[debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update URL:https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html MISC:[qemu-devel] 20160407 Re: [Qemu-devel] [PATCH] i386: kvmvapic: initialise imm32 variable URL:https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01118.html MISC:[qemu-devel] 20160407 [Qemu-devel] [PATCH] i386: kvmvapic: initialise imm32 variable URL:https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01106.html MISC:http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0 URL:http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0 MISC:https://bugzilla.redhat.com/show_bug.cgi?id=1313686 URL:https://bugzilla.redhat.com/show_bug.cgi?id=1313686
Assigning CNA
Red Hat, Inc.
Date Record Created
20160414	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20160414)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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