### 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))

		return
	}

	users := r.Form["users"]
	isAll := r.Form.Get("all") == "true"
	selfOnly := !isAll && len(users) == 0

	if isAll && len(users) > 0 {
		// This should be checked on client side, so return generic error
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
		return
	}

	// Empty user list and not self, list access keys for all users
	if isAll {

- Kubeadm: improved the warning/error messages of `validateSupportedVersion` to include the checked resource kind name. ([#125758](https://github.com/kubernetes/kubernetes/pull/125758), [@SataQiu](https://github.com/SataQiu))

* Fix Audit-ID header key ([#48492](https://github.com/kubernetes/kubernetes/pull/48492), [@CaoShuFeng](https://github.com/CaoShuFeng))
* Checked container spec when killing container. ([#48194](https://github.com/kubernetes/kubernetes/pull/48194), [@k82cn](https://github.com/k82cn))

- Kube-proxy: Checked whether IPv6 was available on Linux before using it. ([#131265](https://github.com/kubernetes/kubernetes/pull/131265), [@rikatz](https://github.com/rikatz))

- IPVS: Any ipvs scheduler can now be configured. If a un-usable scheduler is configured `kube-proxy` will re-start and the logs must be checked (same as before but different log printouts). ([#114878](https://github.com/kubernetes/kubernetes/pull/114878), [@uablrek](https://github.com/uablrek))

      - kubelet_imagemanager_ondisk_pulledrecords - the number of image pulled records currently kept on disk
      - kubelet_imagemanager_image_mustpull_checks_total{result} - the number for how many times an image was checked against the pull records and the results of those checks ([#132812](https://github.com/kubernetes/kubernetes/pull/132812), [@stlaz](https://github.com/stlaz)) [SIG Auth and Node]

* DenyEscalatingExec admission controller now checks psp HostNetwork as well as hostIPC and hostPID. hostNetwork is also checked to deny exec /attach. ([#56839](https://github.com/kubernetes/kubernetes/pull/56839), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

### Feature

- A ValidatingAdmissionPolicy now has its `messageExpression` field checked against resolved types. ([#119209](https://github.com/kubernetes/kubernetes/pull/119209), [@jiahuif](https://github.com/jiahuif)) [SIG API Machinery]

*   Volumes are now checked for available state before attempting to attach or delete a volume in EBS. ([#55008](https://github.com/kubernetes/kubernetes/pull/55008),[ @gnufied](https://github.com/gnufied))