* Fixed kube-proxy to work correctly with iptables 1.6.2 and later. ([#61734](https://github.com/kubernetes/kubernetes/pull/61734), [@danwinship](https://github.com/danwinship))
* Ensure cloudprovider.InstanceNotFound is reported when the VM is not found on Azure ([#61531](https://github.com/kubernetes/kubernetes/pull/61531), [@feiskyer](https://github.com/feiskyer))

- Number of errors reported to the metric `storage_operation_duration_seconds_count` for emptyDir decreased significantly because previously one error was reported for each projected volume created. ([#117022](https://github.com/kubernetes/kubernetes/pull/117022), [@mpatlasov](https://github.com/mpatlasov)) [SIG Storage]

  - kubelet v1.20.0 - v1.20.10
  - kubelet <= v1.19.14

**Fixed Versions**:
  - kubelet v1.22.2
  - kubelet v1.21.5
  - kubelet v1.20.11
  - kubelet v1.19.15

This vulnerability was reported by Fabricio Voznika and Mark Wolters of Google.

**CVSS Rating:** High (8.8) [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

* Remove 'system' prefix from Metadata Agent rbac configuration ([#61394](https://github.com/kubernetes/kubernetes/pull/61394), [@kawych](https://github.com/kawych))
* Ensure cloudprovider.InstanceNotFound is reported when the VM is not found on Azure ([#61531](https://github.com/kubernetes/kubernetes/pull/61531), [@feiskyer](https://github.com/feiskyer))

### SIG Cloud Provider

- The cloudstack cloud provider now reports a `Hostname` address type for nodes based on the `local-hostname` metadata key. ([#67719](https://github.com/kubernetes/kubernetes/pull/67719), [@liggitt](https://github.com/liggitt))

  - kube-apiserver <= v1.18.17

**Fixed Versions**:
  - kube-apiserver v1.21.0
  - kube-apiserver v1.20.6
  - kube-apiserver v1.19.10
  - kube-apiserver v1.18.18

This vulnerability was reported by Rogerio Bastos & Ari Lima from RedHat


**CVSS Rating:** Medium (6.5) [CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H)

## Known Issues

This section contains a list of known issues reported in Kubernetes 1.8 release. The content is populated via [v1.8.x known issues and FAQ accumulator](https://github.com/kubernetes/kubernetes/issues/53004).

- Number of errors reported to the metric `storage_operation_duration_seconds_count` for emptyDir decreased significantly because previously one error was reported for each projected volume created. ([#117022](https://github.com/kubernetes/kubernetes/pull/117022), [@mpatlasov](https://github.com/mpatlasov)) [SIG Storage]

- Fix detach azure disk issue when vm not exist ([#95177](https://github.com/kubernetes/kubernetes/pull/95177), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider]
- Fix etcd_object_counts metric reported by kube-apiserver ([#94817](https://github.com/kubernetes/kubernetes/pull/94817), [@tkashem](https://github.com/tkashem)) [SIG API Machinery]

* Added a feature gate for the plugin watcher. ([#64605](https://github.com/kubernetes/kubernetes/pull/64605), [@vikaschoudhary16](https://github.com/vikaschoudhary16))
* The status of dynamic Kubelet config is now reported via Node.Status.Config, rather than the KubeletConfigOk node condition. ([#63314](https://github.com/kubernetes/kubernetes/pull/63314), [@mtaufen](https://github.com/mtaufen))