## Changelog since v1.27.5

## Changes by Kind

### API Change

- Fixed a bug where CEL expressions in CRD validation rules would incorrectly compute a high estimated cost for functions that return strings, lists or maps.

- Fixed a bug where CEL expressions in CRD validation rules would incorrectly compute a high estimated cost for functions that return strings, lists or maps.

- For raw block CSI volumes on Kubernetes, kubelet was incorrectly calling CSI NodeStageVolume for every single "map" (i.e. raw block "mount") operation for a volume already attached to the node. This PR ensures it is only called once per volume per node. ([#112403](https://github.com/kubernetes/kubernetes/pull/112403),...

* Fix AWS NLB security group updates where valid security group ports were incorrectly removed ([#68422](https://github.com/kubernetes/kubernetes/pull/68422), [@kellycampbell](https://github.com/kellycampbell))
    * when updating a service or when node changes occur.

* Fix AWS NLB security group updates where valid security group ports were incorrectly removed ([#68422](https://github.com/kubernetes/kubernetes/pull/68422), [@kellycampbell](https://github.com/kellycampbell))
    * when updating a service or when node changes occur.

- Fixed bug that caused cAdvisor to incorrectly detect single-socket multi-NUMA topology. ([#99207](https://github.com/kubernetes/kubernetes/pull/99207), [@iwankgb](https://github.com/iwankgb)) [SIG Node]

- Kubernetes now correctly handles "search ." in the host's resolv.conf file by preserving the "." entry in the "resolv.conf" that the kubelet writes to pods. ([#109441](https://github.com/kubernetes/kubernetes/pull/109441), [@Miciah](https://github.com/Miciah)) [SIG Network and Node]

- Kubeadm: fixed a bug where the node registration information for a given node was not fetched correctly during "kubeadm upgrade node" and the node name can end up being incorrect in cases where the node name is not the same as the host name. ([#134362](https://github.com/kubernetes/kubernetes/pull/134362), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

## Changelog since v1.26.8

## Changes by Kind

### API Change

- Fixed a bug where CEL expressions in CRD validation rules would incorrectly compute a high estimated cost for functions that return strings, lists or maps.

com/kubernetes/kubernetes/pull/40848), [@smarterclayton](https://github.com/smarterclayton))

* The behavior of some watch calls to the server when filtering on fields was incorrect. If watching objects with a filter, when an update was made that no longer matched the filter a DELETE event was correctly sent. However, the object that was returned by that delete was not the (correct) version before the update, but instead, the newer version. That meant the new object was not matched by...