- Fixed a bug in ValidatingAdmissionPolicy that caused policies which were using CRD parameters to fail to synchronize ([#123080](https://github.com/kubernetes/kubernetes/pull/123080), [@alexzielenski](https://github.com/alexzielenski)) [SIG API Machinery and Testing]

- Fixed bug where providing a FieldPath to a CRD Validation Rule would erroneously affect the reported field path of other unrelated CRD Validation Rules on the same schema. ([#123475](https://github.com/kubernetes/kubernetes/pull/123475), [@alexzielenski](https://github.com/alexzielenski))

### Bug or Regression

- Fix nil pointer panic in BuildOpenAPIV2 and BuildOpenAPIV3 utilities, used by kube-apiserver's openAPI controller, when a CRD is missing version the requested version. ([#128940](https://github.com/kubernetes/kubernetes/pull/128940), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery]

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- To enhance usability and developer experience, CRD validation rules now support direct use of (CEL) reserved keywords as field names in object validation expressions.