Incorrect Authorization Affecting kernel-debug-modules package, versions <0:4.18.0-80.11.1.el8_0


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (22nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Incorrect Authorization vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RHEL8-KERNELDEBUGMODULES-3919605
  • published26 Jul 2021
  • disclosed5 Apr 2019

Introduced: 5 Apr 2019

CVE-2019-3887  (opens in a new tab)
CWE-863  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:8 kernel-debug-modules to version 0:4.18.0-80.11.1.el8_0 or higher.
This issue was patched in RHSA-2019:2703.

NVD Description

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

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

CVSS Scores

version 3.1