- Vulnerability/
- RHSA-2022:1413
RHSA-2022:1413: Important: kernel-rt security and bug fix update
First published: Tue Apr 19 2022(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: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)</li> <li> kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)</li> <li> kernel: heap out of bounds write in nf_dup_netdev.c (CVE-2022-25636)</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-8.4.z8 source tree (BZ#2059334)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-core | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debug | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debug-core | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debug-debuginfo | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debug-devel | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debug-modules | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debug-modules-extra | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debuginfo | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-devel | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-modules | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-modules-extra | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-debug-kvm | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
| redhat/kernel-rt-kvm | <4.18.0-305.45.1.rt7.117.el8_4 | 4.18.0-305.45.1.rt7.117.el8_4 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2022:1413?
The severity of RHSA-2022:1413 is classified as critical due to vulnerabilities in the kernel-rt packages.
How do I fix RHSA-2022:1413?
To fix RHSA-2022:1413, update the kernel-rt packages to version 4.18.0-305.45.1.rt7.117.el8_4 or later.
What vulnerabilities are addressed by RHSA-2022:1413?
RHSA-2022:1413 addresses vulnerabilities such as CVE-2021-4083 related to file descriptor handling.
Which systems are affected by RHSA-2022:1413?
RHSA-2022:1413 affects systems using the kernel-rt packages that are less than version 4.18.0-305.45.1.rt7.117.el8_4.
Is there a specific package I need to update for RHSA-2022:1413?
Yes, the specific packages to update for RHSA-2022:1413 include kernel-rt, kernel-rt-core, and associated kernel-rt debugging packages.
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