Improper Verification of Cryptographic Signature Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-305.7.1.rt7.79.el8_4


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (22nd percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGKVM-4064080
  • published26 Jul 2021
  • disclosed15 Sept 2020

Introduced: 15 Sep 2020

CVE-2020-26541  (opens in a new tab)
CWE-347  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-kvm to version 0:4.18.0-305.7.1.rt7.79.el8_4 or higher.
This issue was patched in RHSA-2021:2599.

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.

The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.

CVSS Scores

version 3.1