RHSA-2025:7902: Important: kernel-rt security update

Published May 19, 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: netfilter: ipset: add missing range check in bitmapipuadt (CVE-2024-53141) kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756) 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
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
redhat/kernel-rt<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-core<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debug<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debug-core<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debug-debuginfo<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debug-devel<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debug-modules<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debug-modules-extra<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debuginfo<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-devel<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-modules<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-modules-extra<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-debug-kvm<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4
redhat/kernel-rt-kvm<4.18.0-305.157.1.rt7.234.el8_4
4.18.0-305.157.1.rt7.234.el8_4

Remediation

Event History

May 19, 2025
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·01:04 AM
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Frequently Asked Questions

1

What is the severity of RHSA-2025:7902?

The severity of RHSA-2025:7902 is classified as important.

2

How do I fix RHSA-2025:7902?

To fix RHSA-2025:7902, upgrade to the kernel-rt package version 4.18.0-305.157.1.rt7.234.el8_4 or later.

3

What is the main issue addressed by RHSA-2025:7902?

RHSA-2025:7902 addresses a missing range check in bitmap_ip_uadt within the netfilter component.

4

Which products are affected by RHSA-2025:7902?

RHSA-2025:7902 affects Red Hat Enterprise Linux for Real Time and its related products.

5

Is there a common vulnerability identifier associated with RHSA-2025:7902?

Yes, RHSA-2025:7902 is associated with a security fix referenced as CVE-20.

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