RHSA-2026:51422: Important: Red Hat build of MicroShift 4.19.42 security update

Published Aug 12, 2026
·
Updated

Important: Red Hat build of MicroShift 4.19.42 security update

Other sources

Red Hat build of MicroShift is Red Hat's light-weight Kubernetesorchestration solution designed for edge device deployments and is builtfrom the edge capabilities of Red Hat OpenShift Container Platform.MicroShift is an application that is deployed on top of Red Hat EnterpriseLinux devices at the edge, providing an efficient way to operatesingle-node clusters in these low-resource environments.This advisory contains the RPM packages for Red Hat build of MicroShift4.19.42. Read the following advisory for the container images for thisrelease:https://access.redhat.com/errata/RHSA-2026:51007 Security Fix(es): Kubelet: CRI-O: kube-apiserver: Kubelet, CRI-O, kube-apiserver: Denial of Service via SPDY streaming code (CVE-2026-35469)All Red Hat build of MicroShift 4.19 users are advised to use these updatedpackages and images when they are available in the RPM repository.

— Red Hat

Affected Software

25 affected componentsFixes available
Red Hat Red Hat OpenShift Container Platform for IBM Z and LinuxONE
Red Hat Red Hat OpenShift Container Platform for Power
Red Hat Red Hat OpenShift Container Platform for ARM 64
Red Hat Red Hat OpenShift Container Platform
redhat/microshift<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-ai-model-serving<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-ai-model-serving-release-info<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-gateway-api<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-gateway-api-release-info<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-greenboot<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-low-latency<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-multus<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-multus-release-info<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-networking<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-observability<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-olm<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-olm-release-info<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-release-info<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift-selinux<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
redhat/microshift<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
redhat/microshift-gateway-api<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
redhat/microshift-multus<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
redhat/microshift-networking<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
redhat/microshift-olm<4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/microshift to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  2. Upgrade

    Upgrade redhat/microshift-ai-model-serving to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  3. Upgrade

    Upgrade redhat/microshift-ai-model-serving-release-info to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  4. Upgrade

    Upgrade redhat/microshift-gateway-api to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  5. Upgrade

    Upgrade redhat/microshift-gateway-api-release-info to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  6. Upgrade

    Upgrade redhat/microshift-greenboot to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  7. Upgrade

    Upgrade redhat/microshift-low-latency to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  8. Upgrade

    Upgrade redhat/microshift-multus to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  9. Upgrade

    Upgrade redhat/microshift-multus-release-info to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  10. Upgrade

    Upgrade redhat/microshift-networking to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  11. Upgrade

    Upgrade redhat/microshift-observability to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  12. Upgrade

    Upgrade redhat/microshift-olm to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  13. Upgrade

    Upgrade redhat/microshift-olm-release-info to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  14. Upgrade

    Upgrade redhat/microshift-release-info to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  15. Upgrade

    Upgrade redhat/microshift-selinux to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9
  16. Upgrade

    Upgrade redhat/microshift to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
  17. Upgrade

    Upgrade redhat/microshift-gateway-api to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
  18. Upgrade

    Upgrade redhat/microshift-multus to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
  19. Upgrade

    Upgrade redhat/microshift-networking to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
  20. Upgrade

    Upgrade redhat/microshift-olm to a version that resolves this vulnerability.

    Fixed in 4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9.aa
  21. Upgrade

    Upgrade MicroShift to a version that resolves this vulnerability.

    Fixed in 4.19.42Patch RHSA-2026:51007
  22. Compensating control

    Use the updated container images for Red Hat build of MicroShift 4.19 associated with RHSA-2026:51007 (kubelet/CRI-O/kube-apiserver denial of service via SPDY streaming code for CVE-2026-35469) when they are available in the container image repository.

Event History

Aug 12, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·12:08 AM
Data Sourced
via Red Hat·12:08 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:51422?

The severity of RHSA-2026:51422 is classified as high with a score of 7.

2

How do I fix RHSA-2026:51422?

To fix RHSA-2026:51422, apply the latest security update for the affected Red Hat build of MicroShift.

3

What products are affected by RHSA-2026:51422?

RHSA-2026:51422 affects several products, including Red Hat MicroShift, MicroShift-gateway-api, and the OpenShift Container Platform for various architectures.

4

What is the purpose of the RHSA-2026:51422 security update?

The purpose of the RHSA-2026:51422 security update is to address vulnerabilities in the Red Hat build of MicroShift to enhance security.

5

When was RHSA-2026:51422 published?

RHSA-2026:51422 was published on August 12, 2026.

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