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Red Hat: RHSA-2023-1469-01 Important Kernel-RT Security Update

red hat
Calendar Grey March 27, 2023
Dist Redhat Esm H88
The latest kernel-rt update addresses significant security vulnerabilities in Red Hat Enterprise Linux 9, delivering essential patches to ensure system integrity.
An update for kernel-rt is now available for Red Hat Enterprise Linux 9

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Summary

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: tun: avoid double free in tun_free_netdev (CVE-2022-4744)
* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
* kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)
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.
Bug Fix(es):
* kernel-rt: update RT source tree to the latest RHEL-9.1.z3 Batch (BZ#2170460)

Topics%20covered

Topics Covered

security advisory red hat bug fix kernel security important system update security impact

References

https://access.redhat.com/security/cve/CVE-2022-4269 https://access.redhat.com/security/cve/CVE-2022-4744 https://access.redhat.com/security/cve/CVE-2023-0266 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Real Time for NFV (v. 9):
Source: kernel-rt-5.14.0-162.22.2.rt21.186.el9_1.src.rpm
x86_64: kernel-rt-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-core-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debug-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debug-core-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debug-debuginfo-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debug-devel-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debug-kvm-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debug-modules-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debug-modules-extra-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debuginfo-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-debuginfo-common-x86_64-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-devel-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-kvm-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-modules-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-modules-extra-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 9):
Source: kernel-rt-5.14.0-162.22.2.rt21.186.el9_1.src.rpm
x86_64: kernel-rt-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm kernel-rt-core-5.14.0-162.22.2.rt21.186.el9_1.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:1469-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:1469
Issue date: 2023-03-27

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory red hat bug fix kernel security important system update security impact

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time (v. 9) - x86_64

Red Hat Enterprise Linux Real Time for NFV (v. 9) - x86_64

Bugs Fixed

2150272 - CVE-2022-4269 kernel: net: CPU soft lockup in TC mirred egress-to-ingress action

2156322 - CVE-2022-4744 kernel: tun: avoid double free in tun_free_netdev

2163379 - CVE-2023-0266 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF

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