4.18 version change log
View information of version changes for major, minor, and patch updates that are available for your Red Hat® OpenShift® on IBM Cloud® clusters that run this version. Changes include updates to Red Hat OpenShift, Kubernetes, and IBM Cloud Provider components.
Overview
Unless otherwise noted in the change logs, the IBM Cloud provider version enables Red Hat OpenShift APIs and features that are at beta. Red Hat OpenShift alpha features are disabled and subject to change.
Check the Security Bulletins on IBM Cloud Status for security vulnerabilities that affect Red Hat OpenShift on IBM Cloud. You can filter the results to view only Kubernetes Service security bulletins that are relevant to Red Hat OpenShift on IBM Cloud. Change log entries that address other security vulnerabilities but don't include an IBM security bulletin are for vulnerabilities that are not known to affect Red Hat OpenShift on IBM Cloud in normal usage. If you run privileged containers, run commands on the workers, or execute untrusted code, then you might be at risk.
Master patch updates are applied automatically. Worker node patch updates can be applied by reloading or updating the worker nodes. For more information about major, minor, and patch versions and preparation actions between minor versions, see Red Hat OpenShift versions.
Version 4.18
Master fix pack 4.18.11_1547_openshift, released 18 June 2025
The following table shows the changes that are in the master fix pack 4.18.11_1547_openshift. Master patch updates are applied automatically.
| Component | Previous | Current | Description |
|---|---|---|---|
| Calico | v3.29.2 | v3.29.3 | See the Calico release notes. |
| IBM Cloud Block Storage driver and plug-in | v2.5.17 | v2.5.19 | New version contains updates and security fixes. |
| IBM Cloud Controller Manager | v1.31.9-1 | v1.31.9-4 | New version contains updates and security fixes. |
| IBM Cloud RBAC Operator | d1545bd | 38dc95c | New version contains updates and security fixes. |
| Key Management Service provider | v2.10.13 | v2.10.14 | New version contains updates and security fixes. |
| Tigera Operator | v1.36.5 | v1.36.8 | See the Tigera Operator release notes. |
Worker node fix pack 4.18.15_1539_openshift, released 04 June 2025
The following table shows the components included in the worker node fix pack 4.18.15_1539_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.
| Component | Version | Description |
|---|---|---|
| RHEL_9 | 5.14.0-503.40.1.el9_5 | N/A |
| Red Hat OpenShift and Red Hat CoreOS | 4.18.15 | For more information, see the change logs. |
| HAProxy | 978e3c26ee7634e39a940696aaf57d9e374db5ce | N/A |
Master fix pack 4.18.11_1543_openshift, released 28 May 2025
The following table shows the changes that are in the master fix pack 4.18.11_1544_openshift. Master patch updates are applied automatically.
| Component | Previous | Current | Description |
|---|---|---|---|
| IBM Cloud Controller Manager | v1.31.8-3 | v1.31.9-1 | New version contains updates and security fixes. |
| IBM Cloud File Storage for Classic for Classic plug-in and monitor | 449 | 450 | New version contains updates and security fixes. |
Master fix pack 4.18.11_1544_openshift and worker node fix pack 4.18.11_1541_openshift, released 27 May 2025
| Component | Previous | Current | Description |
|---|---|---|---|
| Calico API server | v3.28.3 | v3.29.2 | See the Calico release notes. |
| Calico | v3.28.3 | v3.29.2 | See the Calico release notes. |
| Calico policy controller | v3.28.3 | v3.29.2 | See the Calico release notes. |
| Calico Typha | v3.28.3 | v3.29.2 | See the Calico release notes. |
| Cluster health image | v1.6.8 | v1.6.9 | New version contains updates and security fixes. |
| HA master: etcd-operator image | v2.2.21 | v2.2.23 | New version contains updates and security fixes. |
| IBM Cloud Controller Manager | v1.30.11-6 | v1.31.8-3 | New version contains updates and security fixes. |
| Key Management Service provider | 2.10.12 | 2.10.13 | New version contains updates and security fixes. |
| Kubernetes major.minor release | 1.30 | 1.31 | Kubernetes docs. |
| Load balancer for IBM Cloud Provider | 3232 | 3293 | New version contains updates and security fixes. |
| OpenShift | 4.17.24-x86_64 | 4.18.11-x86_64 | OpenShift docs. |
| Portieris admission controller | v0.13.26 | v0.13.28 | See the Portieris admission controller release notes. |
| Red Hat OpenShift on IBM Cloud Control Plane Operator, Metrics Server, and toolkit | 4.17.0+20250414 | N/A | Red Hat OpenShift on IBM Cloud 4.18 now utilizes Red Hat HyperShift in place of the toolkit. Also, see the Red Hat OpenShift on IBM Cloud toolkit release notes. |
| Tigera Operator | v1.34.8 | v1.36.5 | See the Tigera Operator release notes. |
Worker node fix pack 4.18.17_1539_openshift, released 16 June 2024
The following table shows the components included in the worker node fix pack 4.18.17_1539_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.
| Component | Version | Description |
|---|---|---|
| RHEL_9 | 5.14.0-503.40.1.el9_5 | N/A |
| Red Hat OpenShift and Red Hat CoreOS | 4.18.17 | For more information, see the change logs. |
| HAProxy | 951efd90b46e95a54751966c644ac37c4c901f92 | Resolves the following CVEs: CVE-2025-4802, CVE-2025-32414, and CVE-2025-3576. |