*   `kubectl cp` now honors destination names for directories. A complete directory is now copied; in previous versions only the file contents were copied. ([#51215](https://github.com/kubernetes/kubernetes/pull/51215),[ @juanvallejo](https://github.com/juanvallejo))

- `AppArmor` profiles specified in the Pod or container `SecurityContext` were no longer copied to deprecated `AppArmor` annotations (prefix `container.apparmor.security.beta.kubernetes.io/`). Anything that inspected the deprecated annotations must be migrated to use the `SecurityContext` fields instead. ([#131989](https://github.com/kubern...

- Ensure all vSphere nodes are are tracked by volume attach-detach controller ([#96689](https://github.com/kubernetes/kubernetes/pull/96689), [@gnufied](https://github.com/gnufied))
- Ensure empty string annotations are copied over in rollbacks. ([#94858](https://github.com/kubernetes/kubernetes/pull/94858), [@waynepeking348](https://github.com/waynepeking348))

## Before Upgrading

* When Response is a `metav1.Status`, it is no longer copied into the audit.Event status. Only the "status", "reason" and "code" fields are set.  For example, when we run `kubectl get pods abc`, the API Server returns a status object:

- CRD deep copies should no longer contain shallow copies of `JSONSchemaProps.XValidations`. ([#107956](https://github.com/kubernetes/kubernetes/pull/107956), [@benluddy](https://github.com/benluddy))

not include those `$ref` fields. ([#58438](https://github.com/kubernetes/kubernetes/pull/58438), [@carlory](https://github.com/carlory))

* Webhooks now do not skip cluster-scoped resources. Before upgrading your Kubernetes clusters, double check whether you have configured webhooks for cluster-scoped objects (e.g., nodes, persistentVolume), as these webhooks will start to take effect. Delete/modify the configs if that's not desirable. ([#58185](https://github.com/kubernetes/kubernetes/pull/58185),...

- client-go: The `rest.AnonymousClientConfig(*rest.Config) *rest.Config` helper method no longer copies custom `Transport` and `WrapTransport` fields, because those can be used to inject user credentials. ([#75771](https://github.com/kubernetes/kubernetes/pull/75771), [@liggitt](https://github.com/liggitt))

- EndpointSliceMirroring controller now copies labels from Endpoints to EndpointSlices. ([#93442](https://github.com/kubernetes/kubernetes/pull/93442), [@robscott](https://github.com/robscott)) [SIG Apps and Network]

can delete themselves by adding an OwnerReference

A vulnerability exists in the NodeRestriction admission controller where node users can delete their corresponding node object by patching themselves with an OwnerReference to a cluster-scoped resource. If the OwnerReference resource does not exist or is subsequently deleted, the given node object will be deleted via garbage collection. By default, node users are authorized for create and patch requests but not delete requests against their...

## Release Notes From SIGs

### SIG API Machinery

- The OwnerReferencesPermissionEnforcement admission plugin now checks authorization for the correct scope (namespaced or cluster-scoped) of the owner resource type. Previously, it always checked permissions at the same scope as the child resource. ([#70389](https://github.com/kubernetes/kubernetes/pull/70389), [@caesarxuchao](https://github.com/caesarxuchao))