- Fixed a bug where adding an ephemeral container to a pod which references a new secret or config map doesn't give the pod access to that new secret or config map. (#114984, @cslink) ([#129670](https://github.com/kubernetes/kubernetes/pull/129670), [@cslink](https://github.com/cslink))...

A security issue was discovered in Kubernetes where users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using containers, init containers, and ephemeral containers with the envFrom field populated.

**Affected Versions**:
  - kube-apiserver v1.29.0 - v1.29.3
  - kube-apiserver v1.28.0 - v1.28.8
  - kube-apiserver <= v1.27.12

**Fixed Versions**:

- Fixed a bug where `podCIDR` was released before node was deleted. ([#128305](https://github.com/kubernetes/kubernetes/pull/128305), [@adrianmoisey](https://github.com/adrianmoisey)) [SIG Apps and Network]
- Fixed a bug where the kubelet ephemerally failed with `failed to initialize top level QOS containers: root container [kubepods] doesn't exist`, due to the cpuset cgroup being deleted on cgroup v2 with systemd cgroup manager.