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Red Hat Enterprise Linux 8.2 RHSA-2023-4126-01 Important Kernel Fix

red hat
Calendar Grey July 18, 2023
Dist Redhat Esm H88
Critical kernel-rt upgrade ready for Red Hat Enterprise Linux 8.2 Telecommunications. Implement security patches and resolve bugs promptly.
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Telecommunications Update Service

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: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)
* kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation (CVE-2023-1281)
* kernel: remote DoS in TIPC kernel module (CVE-2023-1390)
* kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)
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 RHEL-8.2.z27 source tree (BZ#2209127)

Topics%20covered

Topics Covered

security advisory privilege escalation DoS important red hat enterprise telecommunications kernel bug fix

References

https://access.redhat.com/security/cve/CVE-2023-0461 https://access.redhat.com/security/cve/CVE-2023-1281 https://access.redhat.com/security/cve/CVE-2023-1390 https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2):
Source: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time TUS (v. 8.2):
Source: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.109.1.rt13.160.el8_2.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4126-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4126
Issue date: 2023-07-18

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2Telecommunications Update Service.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 privilege escalation DoS important red hat enterprise telecommunications kernel bug fix

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time TUS (v. 8.2) - x86_64

Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) - x86_64

Bugs Fixed

2176192 - CVE-2023-0461 kernel: net/ulp: use-after-free in listening ULP sockets

2178212 - CVE-2023-1390 kernel: remote DoS in TIPC kernel module

2181847 - CVE-2023-1281 kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation

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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