- kubelet
  - The deprecated `--google-json-key` flag has been removed. Remove the `--google-json-key` flag from kubelet invocations before upgrading. ([#69354](https://github.com/kubernetes/kubernetes/pull/69354), [@yujuhong](https://github.com/yujuhong))

- kubelet: Users can now enable the alpha NodeLease feature gate to have the Kubelet create and periodically renew a Lease in the kube-node-lease namespace. The lease duration defaults to 40s, and can be configured via the kubelet.config.k8s.io/v1beta1.KubeletConfiguration's NodeLeaseDurationSeconds field. ([#66257](https://github.com/kubernetes/kubernetes/pull/66257),...

to execute arbitrary commands on the host.

**Affected Versions**:
  - kubelet <= v1.29.12
  - kubelet <= v1.30.8
  - kubelet <= v1.31.4
  - kubelet = v1.32.0

**Fixed Versions**:
  - kubelet 1.29.13
  - kubelet 1.30.9
  - kubelet 1.31.5
  - kubelet 1.32.1

This vulnerability was reported by Peled, Tomer and mitigated by Aravindh Puthiyaprambil.

## Changelog since v1.14.3

### Other notable changes

* fix kubelet fail to delete orphaned pod directory when the kubelet's pods directory (default is "/var/lib/kubelet/pods") symbolically links to another disk device's directory ([#79094](https://github.com/kubernetes/kubernetes/pull/79094), [@gaorong](https://github.com/gaorong))

- New configuration is introduced to the kubelet that allows it to track container images and the list of authentication information that leads to their successful pulls. This data is persisted across reboots of the host and restarts of the kubelet.
  

to execute arbitrary commands on the host.

**Affected Versions**:
  - kubelet <= v1.29.12
  - kubelet <= v1.30.8
  - kubelet <= v1.31.4
  - kubelet = v1.32.0

**Fixed Versions**:
  - kubelet 1.29.13
  - kubelet 1.30.9
  - kubelet 1.31.5
  - kubelet 1.32.1

This vulnerability was reported by Peled, Tomer and mitigated by Aravindh Puthiyaprambil.

* [alpha] Rotation of the server TLS certificate on the kubelet. See [TLS bootstrapping - approval controller](https://kubernetes.io/docs/admin/kubelet-tls-bootstrapping/#approval-controller).

* [alpha] Rotation of the client TLS certificate on the kubelet. See [TLS bootstrapping - kubelet configuration](https://kubernetes.io/docs/admin/kubelet-tls-bootstrapping/#kubelet-configuration).

**Affected Versions**:
  - kubelet <= v1.28.0
  - kubelet <= v1.27.4
  - kubelet <= v1.26.7
  - kubelet <= v1.25.12
  - kubelet <= v1.24.16

**Fixed Versions**:
  - kubelet v1.28.1
  - kubelet v1.27.5
  - kubelet v1.26.8
  - kubelet v1.25.13
  - kubelet v1.24.17

directories outside of the volume, including on the host filesystem.

**Affected Versions**:
  - kubelet v1.22.0 - v1.22.1
  - kubelet v1.21.0 - v1.21.4
  - 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.

    1. Generate a `/var/lib/kubelet/instance-config.yaml` file to customize the `containerRuntimeEndpoint` field in per-node kubelet configurations.
    2. Remove the `kubeadm.alpha.kubernetes.io/cri-socket` annotation from nodes during upgrade operations.