RHSA-2023:1467: Important: kernel-rt security and bug fix update
First published: Mon Mar 27 2023(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: tun: avoid double free in tun_free_netdev (CVE-2022-4744)</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 latest RHEL-9.0.z8 Batch (BZ#2174392)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-core | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debug | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debug-core | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debug-debuginfo | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debug-devel | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debug-modules | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debug-modules-extra | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debuginfo | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-devel | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-modules | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-modules-extra | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-debug-kvm | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
| redhat/kernel-rt-kvm | <5.14.0-70.50.2.rt21.122.el9_0 | 5.14.0-70.50.2.rt21.122.el9_0 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2023:1467?
The severity of RHSA-2023:1467 is classified as important.
What is CVE-2022-4744 as mentioned in RHSA-2023:1467?
CVE-2022-4744 refers to a vulnerability in the tun driver that could lead to a double free error.
How do I fix RHSA-2023:1467?
To fix RHSA-2023:1467, update to the kernel-rt package version 5.14.0-70.50.2.rt21.122.el9_0 or later.
Which packages are affected by RHSA-2023:1467?
RHSA-2023:1467 affects various kernel-rt packages including kernel-rt, kernel-rt-core, and kernel-rt-debug among others.
Is there a workaround for the issue described in RHSA-2023:1467?
There are no official workarounds; the recommended action is to apply the security update.
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