Information Exposure Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-193.1.2.rt13.53.el8_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGKVM-3761269
  • published26 Jul 2021
  • disclosed24 Feb 2020

Introduced: 24 Feb 2020

CVE-2020-2732  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-kvm to version 0:4.18.0-193.1.2.rt13.53.el8_2 or higher.
This issue was patched in RHSA-2020:2171.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest.

CVSS Scores

version 3.1