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Red Hat Enterprise Linux 9.0: RHSA-2023-3470-01 Critical Kernel-RT Update

red hat
Calendar Grey June 6, 2023
Dist Redhat Esm H88
Canonical releases security patches for Ubuntu 22.04 LTS, targeting severe vulnerabilities and improving system stability.
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Extended Update Support

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: udmabuf: improper validation of array index leading to local privilege escalation (CVE-2023-2008)
* 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-debug: BUG: MAX_LOCKDEP_CHAINS too low (BZ#2181286)
* kernel-rt: update RT source tree to the latest RHEL-9.0.z9 Batch (BZ#2186491)
* kernel-rt: INFO: task deadline_test:1778 blocked for more than 622 seconds (BZ#2188662)

Topics%20covered

Topics Covered

security advisory critical privilege escalation bug fix Red Hat Enterprise Linux important kernel-rt

References

https://access.redhat.com/security/cve/CVE-2023-0461 https://access.redhat.com/security/cve/CVE-2023-2008 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 EUS (v.9.0):
Source: kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.src.rpm
x86_64: kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debug-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debug-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debug-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debug-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debug-kvm-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debug-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debug-modules-extra-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debuginfo-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-debuginfo-common-x86_64-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-devel-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-kvm-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-modules-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-modules-extra-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v.9.0):
Source: kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.src.rpm
x86_64: kernel-rt-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm kernel-rt-core-5.14.0-70.58.1.rt21.129.el9_0.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3470-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3470
Issue date: 2023-06-06

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0Extended Update Support.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 critical privilege escalation bug fix Red Hat Enterprise Linux important kernel-rt

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time EUS (v.9.0) - x86_64

Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) - x86_64

Bugs Fixed

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

2186862 - CVE-2023-2008 kernel: udmabuf: improper validation of array index leading to local 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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