RHSA-2021:3547: Moderate: kernel-rt security and bug fix update
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.Security Fix(es): kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.Bug Fix(es): kernel-rt: update RT source tree to the RHEL-8.4.z source tree (BZ#2001131)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:3547?
The severity of RHSA-2021:3547 is classified as moderate.
What vulnerability is addressed in RHSA-2021:3547?
RHSA-2021:3547 addresses a vulnerability related to SVM nested virtualization in KVM, specifically identified as CVE-2021-3653.
How do I fix RHSA-2021:3547?
To fix RHSA-2021:3547, update the kernel-rt packages to version 4.18.0-305.19.1.rt7.91.el8_4.
Which packages are affected by RHSA-2021:3547?
The affected packages include kernel-rt, kernel-rt-core, and kernel-rt-debug among others.
Is there an impact on system performance with RHSA-2021:3547?
The update for RHSA-2021:3547 mainly addresses security, and while it may enhance system stability, specific performance impacts depend on individual workloads.