Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 620
Alerts This Week
Warning Icon 1 620

Red Hat 8 RHSA-2022-6437-01 Moderate: Kernel-RT Security Update

red hat
Calendar Grey September 13, 2022
Dist Redhat Esm H88
Balanced kernel-rt security and repair update for CentOS Enterprise Linux tackling various security vulnerabilities.
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):
* Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
* Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
* Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)
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 8.6.z3 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2111112)

Topics%20covered

Topics Covered

security advisory moderate bug fix Red Hat Enterprise Linux system reboot kernel-rt update

References

https://access.redhat.com/security/cve/CVE-2022-21123 https://access.redhat.com/security/cve/CVE-2022-21125 https://access.redhat.com/security/cve/CVE-2022-21166 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.src.rpm
x86_64: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-core-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-core-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-devel-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-kvm-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-modules-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debuginfo-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-devel-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-kvm-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-modules-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-modules-extra-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.src.rpm
x86_64: kernel-rt-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm kernel-rt-core-4.18.0-372.26.1.rt7.183.el8_6.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2022:6437-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:6437
Issue date: 2022-09-13

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 Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate bug fix Red Hat Enterprise Linux system reboot kernel-rt update

Relevant Releases Architectures

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

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

Bugs Fixed

2090237 - CVE-2022-21123 hw: cpu: Incomplete cleanup of multi-core shared buffers (aka SBDR)

2090240 - CVE-2022-21125 hw: cpu: Incomplete cleanup of microarchitectural fill buffers (aka SBDS)

2090241 - CVE-2022-21166 hw: cpu: Incomplete cleanup in specific special register write operations (aka DRPW)

Get the latest News and Insights

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