RHBA-2026:17049 - Bug Fix Advisory

Topic

Updated RHEL-8 based Middleware Containers container images are now available

Description

The RHEL-8 based Middleware Containers container images have been updated to address the following security advisory: RHSA-2026:16799 (see References)

Users of RHEL-8 based Middleware Containers container images are advised to upgrade to these updated images, which contain backported patches to correct these security issues, fix these bugs and add these enhancements. Users of these images are also encouraged to rebuild all container images that depend on these images.

You can find images updated by this advisory in Red Hat Container Catalog (see References).

Solution

The RHEL-8 based Middleware Containers container images provided by this update can be downloaded from the Red Hat Container Registry at registry.access.redhat.com. Installation instructions for your platform are available at Red Hat Container Catalog (see References).

Dockerfiles and scripts should be amended either to refer to this new image specifically, or to the latest image generally.

Affected Products

• Red Hat OpenShift Container Platform 4.10 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform 4.9 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform for Power 4.10 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for Power 4.9 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.10 for RHEL 8 s390x
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.9 for RHEL 8 s390x

Fixes

• BZ - 2463368 - CVE-2026-40356 krb5: MIT Kerberos 5 (krb5): Denial of Service via integer underflow and out-of-bounds read
• BZ - 2463370 - CVE-2026-40355 krb5: MIT Kerberos 5: Denial of Service via NULL pointer dereference in NegoEx mechanism

CVEs

• CVE-2026-40355
• CVE-2026-40356

References

• https://access.redhat.com/errata/RHSA-2026:16799
• https://access.redhat.com/containers