Improper Access Control Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-193.14.3.rt13.67.el8_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGKVM-3834187
  • published26 Jul 2021
  • disclosed19 Aug 2019

Introduced: 19 Aug 2019

CVE-2019-20908  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-kvm to version 0:4.18.0-193.14.3.rt13.67.el8_2 or higher.
This issue was patched in RHSA-2020:3219.

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.

An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032.

CVSS Scores

version 3.1