Alerts This Week
Warning Icon 1 485
Alerts This Week
Warning Icon 1 485

Red Hat Enterprise Linux: RHSA-2022-8673-01 Important: Kernel-RT Threat

red hat
Calendar Grey November 29, 2022
Dist Redhat Esm H88
The latest update from Red Hat for kernel-rt introduces vital security enhancements and bug resolutions, crucial for Enterprise Linux version 8.4.
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 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):
* KVM: cmpxchg_gpte can write to pfns outside the userspace region (CVE-2022-1158)
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):
* Multicast packets are not received by all VFs on the same port even though they have the same VLAN (BZ#2117027)
* Backport use of a dedicate thread for timer wakeups (BZ#2127206)
* Update RT source tree to the RHEL-8.4.z13 source tree. (BZ#2129948)
* Cannot trigger kernel dump using NMI on SNO node running PAO and RT kernel [RT-8] (BZ#2139853)

Topics%20covered

Topics Covered

security advisory security issue bug fix Red Hat Enterprise Linux important update kernel-rt real time kernel

References

https://access.redhat.com/security/cve/CVE-2022-1158 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Real Time for NFV EUS (v.8.4):
Source: kernel-rt-4.18.0-305.71.1.rt7.143.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debug-kvm-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-kvm-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v.8.4):
Source: kernel-rt-4.18.0-305.71.1.rt7.143.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.71.1.rt7.143.el8_4.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:8673-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:8673
Issue date: 2022-11-29

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4Extended 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 security issue bug fix Red Hat Enterprise Linux important update kernel-rt real time kernel

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time EUS (v.8.4) - x86_64

Red Hat Enterprise Linux Real Time for NFV EUS (v.8.4) - x86_64

Bugs Fixed

2069793 - CVE-2022-1158 kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here