- Vulnerability/
- RHSA-2020:3219
RHSA-2020:3219: Moderate: kernel-rt security and bug fix update
First published: Wed Jul 29 2020(Updated: )
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)</li> <li> kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)</li> 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.<br>Bug Fix(es):<br><li> kernel-rt: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837441)</li> <li> kernel-rt: update RT source tree to the RHEL-8.2.z3 source tree (BZ#1856816)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-core | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debug | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debug-core | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debug-debuginfo | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debug-devel | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debug-modules | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debug-modules-extra | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debuginfo | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-devel | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-modules | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-modules-extra | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-debug-kvm | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
| redhat/kernel-rt-kvm | <4.18.0-193.14.3.rt13.67.el8_2 | 4.18.0-193.14.3.rt13.67.el8_2 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2020:3219?
The severity of RHSA-2020:3219 is classified as important due to the potential impact on system security and functionality.
How do I fix RHSA-2020:3219?
To fix RHSA-2020:3219, upgrade the affected packages to version 4.18.0-193.14.3.rt13.67.el8_2 or later.
What vulnerabilities are addressed by RHSA-2020:3219?
RHSA-2020:3219 addresses a bypass in the Linux Kernel lockdown feature through ACPI writes via efivar_ssdt, associated with CVE-2019-20908.
Which packages are affected by RHSA-2020:3219?
The affected packages in RHSA-2020:3219 include kernel-rt, kernel-rt-core, and several kernel-rt-debug packages.
Is a reboot required after applying the fix for RHSA-2020:3219?
Yes, a reboot is typically required to ensure the updated kernel becomes active after applying the fix for RHSA-2020:3219.
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