* fixes a memory leak in the kube-controller-manager observed when large numbers of pods with tolerations are created/deleted ([#65339](https://github.com/kubernetes/kubernetes/pull/65339), [@liggitt](https://github.com/liggitt))

  - [Changelog since v1.20.5](#changelog-since-v1205)
  - [Important Security Information](#important-security-information-1)
    - [CVE-2021-25735: Validating Admission Webhook does not observe some previous fields](#cve-2021-25735-validating-admission-webhook-does-not-observe-some-previous-fields)
  - [Changes by Kind](#changes-by-kind-9)
    - [API Change](#api-change-2)
    - [Feature](#feature-5)
    - [Bug or Regression](#bug-or-regression-9)

## Known Issues

  - [Changelog since v1.19.9](#changelog-since-v1199)
  - [Important Security Information](#important-security-information-1)
    - [CVE-2021-25735: Validating Admission Webhook does not observe some previous fields](#cve-2021-25735-validating-admission-webhook-does-not-observe-some-previous-fields)
  - [Changes by Kind](#changes-by-kind-6)
    - [API Change](#api-change-1)
    - [Feature](#feature-4)
    - [Bug or Regression](#bug-or-regression-5)

- Fixes an issue where an admission webhook can observe a v1 Pod object that does not have the `defaultMode` field set in the injected service account token volume in kube-api-server. ([#104523](https://github.com/kubernetes/kubernetes/pull/104523), [@liggitt](https://github.com/liggitt))

- Kubernetes 1.24 bumped version of golang it is compiled with to go1.18, which introduced significant changes to its garbage collection algorithm. As a result, we observed an increase in memory usage for kube-apiserver in larger an heavily loaded clusters up to ~25% (with the benefit of API call latencies drop by up to 10x on 99th percentiles). If the memory increase is not acceptable for you you can mitigate by setting...

* Pass cluster_location argument to Heapster ([#65176](https://github.com/kubernetes/kubernetes/pull/65176), [@kawych](https://github.com/kawych))
* fixes a memory leak in the kube-controller-manager observed when large numbers of pods with tolerations are created/deleted ([#65339](https://github.com/kubernetes/kubernetes/pull/65339), [@liggitt](https://github.com/liggitt))

* Prevents a `kubectl delete` hang when deleting controller managed lists ([#65367](https://github.com/kubernetes/kubernetes/pull/65367), [@deads2k](https://github.com/deads2k))
* fixes a memory leak in the kube-controller-manager observed when large numbers of pods with tolerations are created/deleted ([#65339](https://github.com/kubernetes/kubernetes/pull/65339), [@liggitt](https://github.com/liggitt))

23FB..23FE    ; valid                  ;      ; NV8    # 9.0  POWER SYMBOL..POWER SLEEP SYMBOL
23FF          ; valid                  ;      ; NV8    # 10.0 OBSERVER EYE SYMBOL
2400..2424    ; valid                  ;      ; NV8    # 1.1  SYMBOL FOR NULL..SYMBOL FOR NEWLINE
2425..2426    ; valid                  ;      ; NV8    # 3.0  SYMBOL FOR DELETE FORM TWO..SYMBOL FOR SUBSTITUTE FORM TWO

- Fixed a bug that resulted in "grpc: the client connection is closing" errors shortly after the Kubernetes API server automatically reloaded its encryption-at-rest config due to an observed change to the file.  This bug was only encountered when the --encryption-provider-config-automatic-reload flag was set to true. ([#113955](https://github.com/kubernetes/kubernetes/pull/113955), [@enj](https://github.com/enj)) [SIG API Machinery,...