RHSA-2023:1469: 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> <li> ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)</li> <li> kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)</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-9.1.z3 Batch (BZ#2170460)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-core | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debug | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debug-core | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debug-debuginfo | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debug-devel | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debug-modules | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debug-modules-extra | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debuginfo | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-devel | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-modules | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-modules-extra | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-debug-kvm | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
| redhat/kernel-rt-kvm | <5.14.0-162.22.2.rt21.186.el9_1 | 5.14.0-162.22.2.rt21.186.el9_1 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2023:1469?
RHSA-2023:1469 addresses a security vulnerability in the kernel-rt package that has been classified as critical due to its potential impact on system stability and security.
What vulnerability does RHSA-2023:1469 fix?
RHSA-2023:1469 fixes a double free vulnerability in the tun_free_netdev function, identified as CVE-2022-4744.
How do I fix RHSA-2023:1469?
To fix RHSA-2023:1469, update the kernel-rt and related packages to version 5.14.0-162.22.2.rt21.186.el9_1.
Which packages are affected by RHSA-2023:1469?
RHSA-2023:1469 affects multiple kernel-rt packages, including kernel-rt, kernel-rt-core, and kernel-rt-debug for Red Hat Enterprise Linux 9.1.
What systems are impacted by RHSA-2023:1469?
Systems running the Real Time Linux Kernel packages on Red Hat Enterprise Linux version 9.1 are impacted by RHSA-2023:1469.
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