CVE-2016-4020

Qemu: i386: leakage of stack memory to guest in kvmvapic.c

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Severity

Low

Red Hat Product Security

3.4

CVSS 3.0

Review impact separately from score.

Published · April 7, 2016

Updated · June 28, 2026

Description

An information-exposure flaw was found in Quick Emulator (QEMU) in Task Priority Register (TPR) optimizations for 32-bit Windows guests. The flaw could occur while accessing TPR. A privileged user inside a guest could use this issue to read portions of the host memory.

Statement

This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 3.4
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS 2.0 · 2.9
AV:A/AC:M/Au:N/C:P/I:N/A:N

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor