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Red Hat Enterprise Linux 9 RHSA-2023:3708-01 Important Kernel-RT Issues

red hat
Calendar Grey June 21, 2023
Dist Redhat Esm H88
Critical kernel-rt patch released for Red Hat Enterprise Linux containing essential security enhancements and bug fixes outlined comprehensively.
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: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (CVE-2023-2235)
* kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)
* Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)
* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)
* kernel: i2c: out-of-bounds write in xgene_slimpro_i2c_xfer() (CVE-2023-2194)
* kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference (CVE-2023-28466)
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):
* [RT] Single Node Openshift cluster becomes unreachable after running less than 2 hours (BZ#2186853)
* kernel-rt: update RT source tree to the latest RHEL-9.2.z1 Batch (BZ#2188313)

Topics%20covered

Topics Covered

security advisory bug fix kernel patch Red Hat Enterprise Linux important kernel-rt

References

https://access.redhat.com/security/cve/CVE-2023-2002 https://access.redhat.com/security/cve/CVE-2023-2124 https://access.redhat.com/security/cve/CVE-2023-2194 https://access.redhat.com/security/cve/CVE-2023-2235 https://access.redhat.com/security/cve/CVE-2023-28466 https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux NFV (v. 9):
Source: kernel-rt-5.14.0-284.18.1.rt14.303.el9_2.src.rpm
x86_64: kernel-rt-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-core-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-core-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-debuginfo-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-devel-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-kvm-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-modules-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-modules-core-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debug-modules-extra-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debuginfo-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-devel-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-kvm-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-modules-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-modules-core-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm kernel-rt-modules-extra-5.14.0-284.18.1.rt14.303.el9_2.x86_64.rpm
Red Hat Enterprise Linux RT (v. 9):
Source: kernel-rt-5.14.0-284.18.1.rt14.303.el9_2.src.rpm
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3708-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3708
Issue date: 2023-06-21

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 bug fix kernel patch Red Hat Enterprise Linux important kernel-rt

Relevant Releases Architectures

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

Red Hat Enterprise Linux RT (v. 9) - x86_64

Bugs Fixed

2179000 - CVE-2023-28466 kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference

2187308 - CVE-2023-2002 Kernel: bluetooth: Unauthorized management command execution

2187439 - CVE-2023-2124 kernel: OOB access in the Linux kernel's XFS subsystem

2188396 - CVE-2023-2194 kernel: i2c: out-of-bounds write in xgene_slimpro_i2c_xfer()

2192589 - CVE-2023-2235 kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events

2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation

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