vania-janet/multiturn-rag-retrieval-data huggingface dataset:
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.18.10_1532

 Component Previous Current Description 

 Kubernetes v1.18.10 v1.18.12 See the [Kubernetes change log](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.mdv11812). 
 Ubuntu 18.04 packages 4.15.0-122-generic 4.15.0-123-generic Updated worker node image with kernel and package updates for [CVE-2020-25692](https://nvd.nist.gov/vuln/detail/CVE-2020-25692), [CVE-2020-25709](https://nvd.nist.gov/vuln/detail/CVE-2020-25709), [CVE-2020-25710](https://nvd.nist.gov/vuln/detail/CVE-2020-25710), [CVE-2020-28196](https://nvd.nist.gov/vuln/detail/CVE-2020-28196), and [CVE-2020-8694](https://nvd.nist.gov/vuln/detail/CVE-2020-8694).
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.12.15_1542_openshift

 Component Previous Current Description 

 Red Hat OpenShift on IBM Cloud. 4.12.15 4.12.16 see [change logs](https://docs.openshift.com/container-platform/4.12/release_notes/ocp-4-12-release-notes.htmlocp-4-12-16). 
 RHEL 8 Packages 4.18.0-425.19.2.el8_7 4.18.0-477.10.1.el8_8 Worker node kernel & package updates for [CVE-2020-10735](https://nvd.nist.gov/vuln/detail/CVE-2020-10735), [CVE-2021-26341](https://nvd.nist.gov/vuln/detail/CVE-2021-26341), [CVE-2021-28861](https://nvd.nist.gov/vuln/detail/CVE-2021-28861), [CVE-2021-33655](https://nvd.nist.gov/vuln/detail/CVE-2021-33655), [CVE-2021-33656](https://nvd.nist.gov/vuln/detail/CVE-2021-33656), [CVE-2022-1462](https://nvd.nist.gov/vuln/detail/CVE-2022-1462), [CVE
Change log for worker node fix pack 3.11.394_1582_openshift, released 12 March 2021 

The following table shows the changes that are in the worker node fix pack 3.11.394_1582_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 3.11.380_1581_openshift

 Component Previous Current Description 

 Red Hat OpenShift node 3.11.380 3.11.394 See the [Red Hat OpenShift release notes](https://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_release_notes.htmlocp-3-11-394).
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.19.15_1567

 Component Previous Current Description 

 Kubernetes 1.19.15 1.19.16 For more information, see the [change log](https://github.com/kubernetes/kubernetes/releases/tag/v1.19.16). 
 HA proxy 07f1e9e 3b8663 Contains fixes for [CVE-2021-20231](https://nvd.nist.gov/vuln/detail/CVE-2021-20231), [CVE-2021-20232](https://nvd.nist.gov/vuln/detail/CVE-2021-20232), [CVE-2021-3580](https://nvd.nist.gov/vuln/detail/CVE-2021-3580), [CVE-2021-22946](https://nvd.nist.gov/vuln/detail/CVE-2021-22946), [CVE-2021-22947](https://nvd.nist.gov/vuln/detail/CVE-2021-22947), [CVE-2021-22876](https://nvd.nist.gov/vuln/detail/CVE-2021-22876), [CVE-2021-22898](https://nvd.nist.gov/vuln/detail/CVE-2021-22898), [CVE-2021-22925](https://nvd.nist.gov/vuln/detail/CVE-2021-22925), [CVE-2019-20838](https://nvd.nist.gov/vuln/detail/CVE-2019-20838), [CVE-2020
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.23.6_1528

 Component Previous Current Description 

 Ubuntu 18.04 packages N/A N/A Worker node package updates for [CVE-2021-36084](https://nvd.nist.gov/vuln/detail/CVE-2021-36084), [CVE-2021-36085](https://nvd.nist.gov/vuln/detail/CVE-2021-36085), [CVE-2021-36086](https://nvd.nist.gov/vuln/detail/CVE-2021-36086), [CVE-2021-36087](https://nvd.nist.gov/vuln/detail/CVE-2021-36087), [CVE-2022-1292](https://nvd.nist.gov/vuln/detail/CVE-2022-1292), [CVE-2022-22576](https://nvd.nist.gov/vuln/detail/CVE-2022-22576), [CVE-2022-27774](https://nvd.nist.gov/vuln/detail/CVE-2022-27774), [CVE-2022-27775](https://nvd.nist.gov/vuln/detail/CVE-2022-27775), [CVE-2022-27776](https://nvd.nist.gov/vuln/detail/CVE-2022-27776), [CVE-2022-29799](https://nvd.nist.gov/vuln/detail/CVE-2022-29799), [CVE-2022-29800](https://nvd.nist.gov/vuln/detail/CVE-2022-29800). 
 Kubernetes N/A N/A N/A
* Make any changes that are marked with Update after master in the [Red Hat OpenShift version preparation guide](https://cloud.ibm.com/docs/openshift?topic=openshift-openshift_versions).
* If you want to apply a patch update, review the [Red Hat OpenShift version change log](https://cloud.ibm.com/docs/openshift?topic=openshift-openshift_versions).
* Consider [adding more worker nodes](https://cloud.ibm.com/docs/openshift?topic=openshift-add_workers) so that your cluster has enough capacity to rescheduling your workloads during the update.
* Make sure that you have the [Operator or Administrator IBM Cloud IAM platform access role](https://cloud.ibm.com/docs/openshift?topic=openshift-userschecking-perms).







 Updating classic worker nodes in the CLI with a configmap 

Set up a ConfigMap to perform a rolling update of your classic worker nodes.



1. Complete the [prerequisite steps](https://cloud.ibm.com/docs/openshift?topic=openshift-updateworker-up-prereqs).
2. List available worker nodes and note their private IP address.

ibmcloud oc worker ls --cluster CLUSTER
3. View the labels of a worker node. You can find the worker node labels in the Labels section of your CLI output. Every label consists of a NodeSelectorKey and a NodeSelectorValue.

oc describe node PRIVATE-WORKER-IP

Example output

NAME: 10.184.58.3
Roles: <none>
Labels: arch=amd64
beta.kubernetes.io/arch=amd64
beta.kubernetes.io/os=linux
failure-domain.beta.kubernetes.io/region=us-south
failure-domain.beta.kubernetes.io/zone=dal12
Change log for worker node fix pack 4.6.20_1534_openshift, released 12 March 2021 

The following table shows the changes that are in the worker node fix pack 4.6.20_1534_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.6.18_1533_openshift

 Component Previous Current Description 

 Red Hat OpenShift 4.6.18 4.6.20 See the [Red Hat OpenShift release notes](https://docs.openshift.com/container-platform/4.6/release_notes/ocp-4-6-release-notes.htmlocp-4-6-20).
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.3.25_1527_openshift

 Component Previous Current Description 

 Master Proxy 1.8.25-30b675 2.0.15-afe432 See the [HAProxy change logs](https://www.haproxy.org/download/2.0/src/CHANGELOG). 
 RHEL 7 Packages 3.10.0-1127.10.1.el7 3.10.0-1127.13.1.el7 Updated worker node images with kernel package updates for [CVE-2020-10749](https://nvd.nist.gov/vuln/detail/CVE-2020-10749), [CVE-2020-1702](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1702), [CVE-2016-8867](https://nvd.nist.gov/vuln/detail/CVE-2016-8867), [CVE-2020-14298](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14298), [CVE-2020-14300](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14300), [CVE-2020-12888](https://nvd.nist.gov/vuln/detail/CVE-2020-12888), [CVE-2020-11868](https://nvd.nist.gov/vuln/detail/CVE-2020-11868), and [CVE-2020-13817](https://nvd.nist.gov/vuln/detail/CVE-2020-13817).
Change log for worker node fix pack 1.23.12_1548, released 10 October 2022 

The following table shows the changes that are in the worker node fix pack 1.23.12_1548. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.23.12_1547

 Component Previous Current Description 

 Ubuntu 18.04 packages N/A N/A N/A 
 Kubernetes N/A N/A N/A 







 Change log for master fix pack 1.23.12_1546, released 26 September 2022 

The following table shows the changes that are in the master fix pack 1.23.12_1546. Master patch updates are applied automatically.



Changes since version 1.23.101544

 Component Previous Current Description 

 Cluster health image v1.3.10 v1.3.11 Updated Go dependencies and to Go version 1.18.6. 
 CoreDNS 1.8.6 1.9.3 See the [CoreDNS release notes](https://coredns.io/2022/05/27/coredns-1.9.3-release/). 
 GPU device plug-in and installer c58c299 373bb9f Updated to Go version 1.19.1. 
 IBM Calico extension 1006 1096 Updated image for [CVE-2022-2526](https://nvd.nist.gov/vuln/detail/CVE-2022-2526). 
 IBM Cloud Controller Manager v1.23.9-3 v1.23.11-1 Updated Go dependencies and to use Go version 1.17.13. Updated to support the Kubernetes 1.23.11 release. 
 IBM Cloud File Storage for Classic plug-in and monitor 414 416 Updated to Go version 1.18.6. Updated universal base image (UBI) to version 8.6-941 to resolve CVEs. 
 Key Management Service Provider v2.5.8 v2.5.9 Updated Go dependencies and to Go version 1.18.6.
* Major.minor: A major.minor update moves up the Kubernetes version of the worker node to the same version as the master. This type of update often includes changes to the Kubernetes API or other behaviors that you must prepare your cluster for. Remember that your worker nodes can only be one version behind the master version (n-1). You can update the classic worker node to the same patch by using the ibmcloud oc worker update command.



For more information, see [Update types](https://cloud.ibm.com/docs/containers?topic=containers-cs_versionsupdate_types).

What happens to my apps during an update?
: If you run apps as part of a deployment on worker nodes that you update, the apps are rescheduled onto other worker nodes in the cluster. These worker nodes might be in a different worker pool, or if you have stand-alone worker nodes, apps might be scheduled onto stand-alone worker nodes. To avoid downtime for your app, you must ensure that you have enough capacity in the cluster to carry the workload.

How can I control how many worker nodes go down at a time during an update or reload?
: If you need all your worker nodes to be up and running, consider [resizing your worker pool](https://cloud.ibm.com/docs/openshift?topic=openshift-kubernetes-service-clics_worker_pool_resize) or [adding stand-alone worker nodes](https://cloud.ibm.com/docs/openshift?topic=openshift-kubernetes-service-clics_worker_add) to add more worker nodes. You can remove the additional worker nodes after the update is completed.

In addition, you can create a Kubernetes config map that specifies the maximum number of worker nodes that can be unavailable at a time, such as during an update. Worker nodes are identified by the worker node labels. You can use IBM-provided labels or custom labels that you added to the worker node.

The Kubernetes config map rules are used for updating worker nodes only.
* If you want to apply a patch update, review the [Kubernetes clusters](https://cloud.ibm.com/docs/containers?topic=containers-changelog) version change log.
* Make sure that you have the [Operator or Administrator IBM Cloud IAM platform access role](https://cloud.ibm.com/docs/containers?topic=containers-userschecking-perms).







 Updating VPC worker nodes in the CLI 

Complete the following steps to update your worker nodes by using the CLI.



1. Complete the [prerequisite steps](https://cloud.ibm.com/docs/containers?topic=containers-updatevpc_worker_prereqs).
2. Optional: Add capacity to your cluster by [resizing the worker pool](https://cloud.ibm.com/docs/containers?topic=containers-add_workersresize_pool). The pods on the worker node can be rescheduled and continue running on the added worker nodes during the update.
3. List the worker nodes in your cluster and note the ID and Primary IP of the worker node that you want to update.

ibmcloud ks worker ls --cluster CLUSTER
4. Replace the worker node to update either the patch version or the major.minor version that matches the master version.



* To update the worker node to the same major.minor version as the master, such as from 1.25 to 1.26, include the --update option.

ibmcloud ks worker replace --cluster CLUSTER --worker WORKER-NODE-ID --update
* To update the worker node to the latest patch version at the same major.minor version, such as from 1.25.8_1530 to 1.25.9_1533, don't include the --update option.

ibmcloud ks worker replace --cluster CLUSTER --worker WORKER-NODE-ID



5. Repeat these steps for each worker node that you must update.
6.
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.21.12_1558

 Component Previous Current Description 

 Ubuntu 18.04 packages N/A N/A Worker node package updates for [CVE-2021-36084](https://nvd.nist.gov/vuln/detail/CVE-2021-36084), [CVE-2021-36085](https://nvd.nist.gov/vuln/detail/CVE-2021-36085), [CVE-2021-36086](https://nvd.nist.gov/vuln/detail/CVE-2021-36086), [CVE-2021-36087](https://nvd.nist.gov/vuln/detail/CVE-2021-36087), [CVE-2022-1292](https://nvd.nist.gov/vuln/detail/CVE-2022-1292), [CVE-2022-22576](https://nvd.nist.gov/vuln/detail/CVE-2022-22576), [CVE-2022-27774](https://nvd.nist.gov/vuln/detail/CVE-2022-27774), [CVE-2022-27775](https://nvd.nist.gov/vuln/detail/CVE-2022-27775), [CVE-2022-27776](https://nvd.nist.gov/vuln/detail/CVE-2022-27776), [CVE-2022-29799](https://nvd.nist.gov/vuln/detail/CVE-2022-29799), [CVE-2022-29800](https://nvd.nist.gov/vuln/detail/CVE-2022-29800). 
 Kubernetes N/A N/A N/A
The following table shows the changes that are in the worker node fix pack 4.9.56_1576_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.9.54_1575_openshift

 Component Previous Current Description 

 RHEL 7 Packages N/A N/A N/A 
 RHEL 8 Packages 4.18.0-425.10.1 4.18.0-425.13.1 Worker node & kernel package updates for [CVE-2020-10735](https://nvd.nist.gov/vuln/detail/CVE-2020-10735), [CVE-2021-28861](https://nvd.nist.gov/vuln/detail/CVE-2021-28861), [CVE-2022-2873](https://nvd.nist.gov/vuln/detail/CVE-2022-2873), [CVE-2022-40897](https://nvd.nist.gov/vuln/detail/CVE-2022-40897), [CVE-2022-41222](https://nvd.nist.gov/vuln/detail/CVE-2022-41222), [CVE-2022-43945](https://nvd.nist.gov/vuln/detail/CVE-2022-43945), [CVE-2022-4415](https://nvd.nist.gov/vuln/detail/CVE-2022-4415), [CVE-2022-45061](https://nvd.nist.gov/vuln/detail/CVE-2022-45061), [CVE-2022-48303](https://nvd.nist.gov/vuln/detail/CVE-2022-48303). 
 Red Hat OpenShift on IBM Cloud.
Change log for worker node fix pack 1.24.7_1543, released 07 November 2022 

The following table shows the changes that are in the worker node fix pack 1.24.7_1543. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.24.6_1541

 Component Previous Current Description 

 Ubuntu 18.04 packages N/A N/A Worker node package updates for [CVE-2022-32221](https://nvd.nist.gov/vuln/detail/CVE-2022-32221), [CVE-2022-40284](https://nvd.nist.gov/vuln/detail/CVE-2022-40284), [CVE-2022-42010](https://nvd.nist.gov/vuln/detail/CVE-2022-42010), [CVE-2022-42011](https://nvd.nist.gov/vuln/detail/CVE-2022-42011), [CVE-2022-42012](https://nvd.nist.gov/vuln/detail/CVE-2022-42012). 
 Kubernetes 1.24.6 1.24.7 For more information, see the [change log](https://github.com/kubernetes/kubernetes/releases/tag/v1.24.7).
The following table shows the changes that are in the worker node fix pack 4.9.59_1593_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.9.59_1592_openshift

 Component Previous Current Description 

 Red Hat OpenShift on IBM Cloud. N/A N/A N/A 
 RHEL 7 Packages 3.10.0-1160.90.1.el7 3.10.0-1160.92.1.el7 Worker node kernel & package updates for [CVE-2022-48339](https://nvd.nist.gov/vuln/detail/CVE-2022-48339),[CVE-2023-24329](https://nvd.nist.gov/vuln/detail/CVE-2023-24329). 
 RHEL 8 Packages N/A N/A Worker node package updates for [CVE-2023-32067](https://nvd.nist.gov/vuln/detail/CVE-2023-32067),[CVE-2023-24329](https://nvd.nist.gov/vuln/detail/CVE-2023-24329). 







 Change log for worker node fix pack 4.9.59_1592_openshift, released 5 June 2023 

The following table shows the changes that are in the worker node fix pack 4.9.59_1592_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.9.59_1590_openshift

 Component Previous Current Description 

 Red Hat OpenShift on IBM Cloud. N/A N/A N/A 
 RHEL 7 Packages N/A N/A N/A
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.22.9_1550

 Component Previous Current Description 

 Ubuntu 18.04 packages N/A N/A Worker node package updates for [CVE-2021-36084](https://nvd.nist.gov/vuln/detail/CVE-2021-36084), [CVE-2021-36085](https://nvd.nist.gov/vuln/detail/CVE-2021-36085), [CVE-2021-36086](https://nvd.nist.gov/vuln/detail/CVE-2021-36086), [CVE-2021-36087](https://nvd.nist.gov/vuln/detail/CVE-2021-36087), [CVE-2022-1292](https://nvd.nist.gov/vuln/detail/CVE-2022-1292), [CVE-2022-22576](https://nvd.nist.gov/vuln/detail/CVE-2022-22576), [CVE-2022-27774](https://nvd.nist.gov/vuln/detail/CVE-2022-27774), [CVE-2022-27775](https://nvd.nist.gov/vuln/detail/CVE-2022-27775), [CVE-2022-27776](https://nvd.nist.gov/vuln/detail/CVE-2022-27776), [CVE-2022-29799](https://nvd.nist.gov/vuln/detail/CVE-2022-29799), [CVE-2022-29800](https://nvd.nist.gov/vuln/detail/CVE-2022-29800). 
 Kubernetes N/A N/A N/A
The following table shows the changes that are in the worker node fix pack 4.12.8_1535_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.12.6_1531_openshift

 Component Previous Current Description 

 RHEL 8 Packages N/A N/A N/A 
 Red Hat OpenShift on IBM Cloud. 4.12.6 4.12.8 For more information, see the [change log](https://docs.openshift.com/container-platform/4.12/release_notes/ocp-4-12-release-notes.htmlocp-4-12-8). 
 Haproxy af5031 8398d1 [CVE-2023-23916](https://nvd.nist.gov/vuln/detail/CVE-2023-23916). 







 Change log for worker node fix pack 4.12.6_1531_openshift, released 13 March 2023 

The following table shows the changes that are in the worker node fix pack 4.12.6_1531_openshift. Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 4.12.4_1528_openshift

 Component Previous Current Description 

 RHEL 8 Packages N/A N/A Worker node package updates for [CVE-2023-23916](https://nvd.nist.gov/vuln/detail/CVE-2023-23916). 
 Red Hat OpenShift on IBM Cloud. 4.12.4 4.12.6 For more information, see the [change log](https://docs.openshift.com/container-platform/4.12/release_notes/ocp-4-12-release-notes.htmlocp-4-12-6). 







 Change log for master fix pack 4.12.3_1530_openshift, released 2 March 2023
ibmcloud ks worker replace --cluster CLUSTER --worker WORKER-NODE-ID --update
* To update the worker node to the latest patch version at the same major.minor version, such as from 1.25.8_1530 to 1.25.9_1533, don't include the --update option.

ibmcloud ks worker replace --cluster CLUSTER --worker WORKER-NODE-ID



5. Repeat these steps for each worker node that you must update.
6. Optional: After the replaced worker nodes are in a Ready status, [resize the worker pool](https://cloud.ibm.com/docs/containers?topic=containers-add_workersresize_pool) to meet the cluster capacity that you want.



If you are running Portworx in your VPC cluster, you must [manually attach your Block Storage for VPC volume to your new worker node.](https://cloud.ibm.com/docs/containers?topic=containers-storage_portworx_update)





 Updating VPC worker nodes in the console 

You can update your VPC worker nodes in the console. Before you begin, consider [adding more worker nodes](https://cloud.ibm.com/docs/containers?topic=containers-add_workers) to the cluster to help avoid downtime for your apps.



1. Complete the [prerequisite steps](https://cloud.ibm.com/docs/containers?topic=containers-updatevpc_worker_prereqs).
2. From the [IBM Cloud console](https://cloud.ibm.com/) menu ![Menu icon](https://cloud.ibm.com/docs-content/v1/content/4d497aff9e27b92fbbc2ee4e343a9ec4549cb1d7/icons/icon_hamburger.svg), click Kubernetes.
3. From the Clusters page, click your cluster.
4. From the Worker Nodes tab, select the checkbox for each worker node that you want to update.
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.16.11_1537

 Component Previous Current Description 

 HAProxy 2.0.15-afe432 1.8.25-384f42 See the [HAProxy change log](https://www.haproxy.org/download/1.8/src/CHANGELOG). Fixes a connection leak that happens when HAProxy is under high load. 
 Kubernetes v1.16.11 v1.16.13 See the [Kubernetes change logs](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.16.mdv11613). The update resolves CVE-2020-8557 (see the [IBM security bulletin](https://www.ibm.com/support/pages/node/6249941)).
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.19.7_1535

 Component Previous Current Description 

 Kubernetes v1.19.7 v1.19.8 See the [Kubernetes release notes](https://github.com/kubernetes/kubernetes/releases/tag/v1.19.8). 
 Ubuntu 18.04 packages 4.15.0-135-generic 4.15.0-136-generic Updated worker node image with package updates for [CVE-2020-27619](https://nvd.nist.gov/vuln/detail/CVE-2020-27619), [CVE-2020-29372](https://nvd.nist.gov/vuln/detail/CVE-2020-29372), [CVE-2020-29374](https://nvd.nist.gov/vuln/detail/CVE-2020-29374), [CVE-2020-8625](https://nvd.nist.gov/vuln/detail/CVE-2020-8625), [CVE-2021-23840](https://nvd.nist.gov/vuln/detail/CVE-2021-23840), [CVE-2021-23841](https://nvd.nist.gov/vuln/detail/CVE-2021-23841), [CVE-2021-26937](https://nvd.nist.gov/vuln/detail/CVE-2021-26937), [CVE-2021-27212](https://nvd.nist.gov/vuln/detail/CVE-2021-27212), and [CVE-2021-3177](https://nvd.nist.gov/vuln/detail/CVE-2021-3177).
Worker node patch updates can be applied by updating, reloading (in classic infrastructure), or replacing (in VPC infrastructure) the worker node.



Changes since version 1.18.15_1541

 Component Previous Current Description 

 Kubernetes v1.18.15 v1.18.16 See the [Kubernetes release notes](https://github.com/kubernetes/kubernetes/releases/tag/v1.18.16). 
 Ubuntu 18.04 packages 4.15.0-135-generic 4.15.0-136-generic Updated worker node image with package updates for [CVE-2020-27619](https://nvd.nist.gov/vuln/detail/CVE-2020-27619), [CVE-2020-29372](https://nvd.nist.gov/vuln/detail/CVE-2020-29372), [CVE-2020-29374](https://nvd.nist.gov/vuln/detail/CVE-2020-29374), [CVE-2020-8625](https://nvd.nist.gov/vuln/detail/CVE-2020-8625), [CVE-2021-23840](https://nvd.nist.gov/vuln/detail/CVE-2021-23840), [CVE-2021-23841](https://nvd.nist.gov/vuln/detail/CVE-2021-23841), [CVE-2021-26937](https://nvd.nist.gov/vuln/detail/CVE-2021-26937), [CVE-2021-27212](https://nvd.nist.gov/vuln/detail/CVE-2021-27212), and [CVE-2021-3177](https://nvd.nist.gov/vuln/detail/CVE-2021-3177).