RHSA-2026:52761: Moderate: kernel-rt security update

Published Aug 10, 2026
·
Updated

Moderate: 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: iio: event: Fix event FIFO reset race (CVE-2026-64496) 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

18 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for Real Time for NFV
Red Hat Red Hat Enterprise Linux for Real Time
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
redhat/kernel-rt<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-core<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debug<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debug-core<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debug-debuginfo<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debug-devel<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debug-modules<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debug-modules-extra<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debuginfo<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-devel<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-modules<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-modules-extra<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-debug-kvm<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10
redhat/kernel-rt-kvm<4.18.0-553.154.1.rt7.495.el8_10
4.18.0-553.154.1.rt7.495.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  2. Upgrade

    Upgrade redhat/kernel-rt-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  3. Upgrade

    Upgrade redhat/kernel-rt-debug to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  4. Upgrade

    Upgrade redhat/kernel-rt-debug-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  5. Upgrade

    Upgrade redhat/kernel-rt-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  6. Upgrade

    Upgrade redhat/kernel-rt-debug-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  7. Upgrade

    Upgrade redhat/kernel-rt-debug-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  8. Upgrade

    Upgrade redhat/kernel-rt-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  9. Upgrade

    Upgrade redhat/kernel-rt-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  10. Upgrade

    Upgrade redhat/kernel-rt-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  11. Upgrade

    Upgrade redhat/kernel-rt-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  12. Upgrade

    Upgrade redhat/kernel-rt-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  13. Upgrade

    Upgrade redhat/kernel-rt-debug-kvm to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  14. Upgrade

    Upgrade redhat/kernel-rt-kvm to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.154.1.rt7.495.el8_10
  15. Upgrade

    Upgrade kernel-rt packages to a version that resolves this vulnerability.

    Patch CVE-2026-64496
  16. Operational

    Reboot the system after installing the kernel-rt security update so the changes take effect.

Event History

Aug 10, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·09:00 AM
Data Sourced
via Red Hat·09:00 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:52761?

The severity of RHSA-2026:52761 is classified as medium with a score of 4.

2

How do I fix RHSA-2026:52761?

To fix RHSA-2026:52761, update your kernel-rt packages to the latest available version provided by Red Hat.

3

What does the RHSA-2026:52761 vulnerability affect?

The RHSA-2026:52761 vulnerability affects the Real-Time Linux Kernel and its associated packages.

4

What security issues are addressed in RHSA-2026:52761?

RHSA-2026:52761 addresses a security issue related to an event FIFO reset race as described in CVE-2026-64496.

5

When was RHSA-2026:52761 published?

RHSA-2026:52761 was published on August 10, 2026.

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