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Red Hat Enterprise Linux 8 RHSA-2023-0114-01 Security Update for Kernel-RT

red hat
Calendar Grey January 12, 2023
Dist Redhat Esm H88
The latest kernel-rt upgrade for RHEL 8 resolves vulnerabilities related to memory corruption and security flaws in GPU TLB flushing.
An update for kernel-rt is now available for Red Hat Enterprise Linux 8

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: memory corruption in AX88179_178A based USB ethernet device. (CVE-2022-2964)
* kernel: i915: Incorrect GPU TLB flush can lead to random memory access (CVE-2022-4139)
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):
* The latest RHEL 8.7.z1 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2137411)
* [DELL EMC 8.6-RT BUG] System is not booting into RT Kernel with perc12. (BZ#2139867)

Topics%20covered

Topics Covered

security advisory bug fix memory corruption Red Hat Enterprise Linux important kernel-rt GPU access

References

https://access.redhat.com/security/cve/CVE-2022-2964 https://access.redhat.com/security/cve/CVE-2022-4139 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source: kernel-rt-4.18.0-425.10.1.rt7.220.el8_7.src.rpm
x86_64: kernel-rt-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-core-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debug-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debug-core-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debug-devel-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debug-kvm-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debug-modules-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debuginfo-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-devel-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-kvm-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-modules-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-modules-extra-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 8):
Source: kernel-rt-4.18.0-425.10.1.rt7.220.el8_7.src.rpm
x86_64: kernel-rt-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm kernel-rt-core-4.18.0-425.10.1.rt7.220.el8_7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:0114-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0114
Issue date: 2023-01-12

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.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 memory corruption Red Hat Enterprise Linux important kernel-rt GPU access

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time for NFV (v. 8) - x86_64

Red Hat Enterprise Linux for Real Time (v. 8) - x86_64

Bugs Fixed

2067482 - CVE-2022-2964 kernel: memory corruption in AX88179_178A based USB ethernet device.

2147572 - CVE-2022-4139 kernel: i915: Incorrect GPU TLB flush can lead to random memory access

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