RHSA-2020:5428: Moderate: kernel-rt security and bug fix update
First published: Tue Dec 15 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: information exposure in drivers/char/random.c and kernel/time/timer.c (CVE-2020-16166)</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: update RT source tree to the RHEL-8.2.z#5 source tree (BZ#1873287)</li> <li> optimization for delaying the freeing of empty slubs causes a NULL pointer dereference (BZ#1880502)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-core | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debug | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debug-core | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debug-debuginfo | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debug-devel | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debug-modules | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debug-modules-extra | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debuginfo | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-devel | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-modules | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-modules-extra | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-debug-kvm | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
| redhat/kernel-rt-kvm | <4.18.0-193.37.1.rt13.87.el8_2 | 4.18.0-193.37.1.rt13.87.el8_2 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2020:5428?
The severity of RHSA-2020:5428 is classified as moderate due to the information exposure vulnerabilities.
How do I fix RHSA-2020:5428?
To fix RHSA-2020:5428, you should update the kernel-rt packages to version 4.18.0-193.37.1.rt13.87.el8_2.
What vulnerabilities are addressed in RHSA-2020:5428?
RHSA-2020:5428 addresses vulnerabilities related to information exposure in drivers/char/random.c and kernel/time/timer.c.
Which packages are affected by RHSA-2020:5428?
RHSA-2020:5428 affects multiple kernel-rt packages including kernel-rt, kernel-rt-core, and kernel-rt-debug.
How can I determine if my system is affected by RHSA-2020:5428?
You can determine if your system is affected by checking the installed versions of the kernel-rt packages against the vulnerable version.
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