This bug causes the conformance test "HostPort validates that there is no conflict between pods with same hostPort but different hostIP and protocol" to fail. ([#98838](https://github.com/kubernetes/kubernetes/pull/98838), [@aojea](https://github.com/aojea)) [SIG Network and Node]

### Bug or Regression

- Panics while calling validating admission webhook are caught and honor the fail open or fail closed setting. ([#108746](https://github.com/kubernetes/kubernetes/pull/108746), [@deads2k](https://github.com/deads2k)) [SIG API Machinery]

- Fixes an issue where default RBAC policy could fail to reconcile on API server startup if an error was encountered ([#101954](https://github.com/kubernetes/kubernetes/pull/101954), [@voutcn](https://github.com/voutcn)) [SIG Auth]

    - [Workloads that saturate nodes with pods may see pods that fail due to node admission](#workloads-that-saturate-nodes-with-pods-may-see-pods-that-fail-due-to-node-admission)
    - [Etcd v3.5.[0-2] data corruption](#etcd-v350-2-data-corruption)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)

- Client-go: fix that paged list calls with ResourceVersionMatch set would fail once paging kicked in. ([#107334](https://github.com/kubernetes/kubernetes/pull/107334), [@fasaxc](https://github.com/fasaxc)) [SIG API Machinery]

- Kube-apiserver: Authorization webhooks now report the following metrics:
  - apiserver_authorization_webhook_evaluations_total
  - apiserver_authorization_webhook_duration_seconds
  - apiserver_authorization_webhook_evaluations_fail_open_total ([#123639](https://github.com/kubernetes/kubernetes/pull/123639), [@liggitt](https://github.com/liggitt))

## Changelog since v1.15.7

### Other notable changes

* Fixed a regression where the kubelet would fail to update the ready status of pods. ([#86195](https://github.com/kubernetes/kubernetes/pull/86195), [@tedyu](https://github.com/tedyu))

## Changelog since v1.14.7

### Other notable changes

* Fixes an issue in the AWS cloudprovider, where ELBs fail to register instances ([#82954](https://github.com/kubernetes/kubernetes/pull/82954), [@M00nF1sh](https://github.com/M00nF1sh))

- Fixed a bug in ValidatingAdmissionPolicy that caused policies which were using CRD parameters to fail to synchronize ([#123080](https://github.com/kubernetes/kubernetes/pull/123080), [@alexzielenski](https://github.com/alexzielenski)) [SIG API Machinery and Testing]

* Local volume source paths that are directories and not mount points fail to unmount.  A fix is in process ([#48331](https://github.com/kubernetes/kubernetes/issues/48331)).