RHSA-2025:3211: Important: kernel-rt security update

Published Mar 26, 2025
·
Updated

Important: kernel-rt security update

Other sources

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: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (CVE-2025-21785) 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.

— Red Hat

Affected Software

17 affected componentsFixes available
redhat/kernel-rt<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-core<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debug<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debug-core<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debug-debuginfo<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debug-devel<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debug-modules<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debug-modules-extra<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debuginfo<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-devel<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-modules<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-modules-extra<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-debug-kvm<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
redhat/kernel-rt-kvm<4.18.0-305.152.1.rt7.229.el8_4
4.18.0-305.152.1.rt7.229.el8_4
Red Hat Red Hat Enterprise Linux for Real Time - Telecommunications Update Service
Red Hat Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service

Remediation

Event History

Mar 26, 2025
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·12:58 AM
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Frequently Asked Questions

1

What is the severity of RHSA-2025:3211?

The severity of RHSA-2025:3211 is classified as important.

2

How do I fix RHSA-2025:3211?

To fix RHSA-2025:3211, update to kernel-rt version 4.18.0-305.152.1.rt7.229.el8_4.

3

What vulnerabilities are addressed in RHSA-2025:3211?

RHSA-2025:3211 addresses an out-of-bounds write vulnerability in the arm64 cacheinfo array.

4

Which products are affected by RHSA-2025:3211?

RHSA-2025:3211 affects various Red Hat Enterprise Linux for Real Time packages.

5

How can I verify if my system is affected by RHSA-2025:3211?

You can verify if your system is affected by checking the version of the kernel-rt package installed on your system.

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