* Fix incorrect conflict errors applying strategic merge patches to resources. ([#43871](https://github.com/kubernetes/kubernetes/pull/43871), [@liggitt](https://github.com/liggitt))
* Fixed an issue mounting the wrong secret into pods as a service account token. ([#44102](https://github.com/kubernetes/kubernetes/pull/44102), [@ncdc](https://github.com/ncdc))

* Moved qos to api.helpers. ([#44906](https://github.com/kubernetes/kubernetes/pull/44906), [@k82cn](https://github.com/k82cn))

* Fix issue with the resource quota controller causing add quota to be resynced at the wrong ([#45685](https://github.com/kubernetes/kubernetes/pull/45685), [@derekwaynecarr](https://github.com/derekwaynecarr))

          CertificatePinner
            .Builder()
            .add(server.hostName, "sha1/DmxUShsZuNiqPQsX2Oi9uv2sCnw=")
            .build(),
        ).build()

    // When we pin the wrong certificate, connectivity fails.
    val request = Request.Builder().url(server.url("/")).build()
    assertFailsWith<SSLPeerUnverifiedException> {
      client.newCall(request).execute()
    }.also { expected ->

## Changes by Kind

### Bug or Regression

- Fix a bug when the hostname label of a node does not match the node name, pods bound to a PV with nodeAffinity using the hostname may be scheduled to the wrong node or experience scheduling failures. ([#127586](https://github.com/kubernetes/kubernetes/pull/127586), [@AxeZhan](https://github.com/AxeZhan)) [SIG Scheduling and Storage]

- Fixed a bug in kube-proxy nftables mode (GA as of 1.33) that fails to determine if traffic originates from a local source on the node. The issue was caused by using the wrong meta `iif` instead of `iifname` for name based matches. ([#134117...

## Changes by Kind

### Bug or Regression

- Fix a bug when the hostname label of a node does not match the node name, pods bound to a PV with nodeAffinity using the hostname may be scheduled to the wrong node or experience scheduling failures. ([#127585](https://github.com/kubernetes/kubernetes/pull/127585), [@AxeZhan](https://github.com/AxeZhan)) [SIG Scheduling and Storage]

* Fix validation for HealthzBindAddress in kube-proxy when --healthz-port is set to 0 ([#66138](https://github.com/kubernetes/kubernetes/pull/66138), [@wsong](https://github.com/wsong))

- Fix validation for HealthzBindAddress in kube-proxy when --healthz-port is set to 0 ([#66138](https://github.com/kubernetes/kubernetes/pull/66138), [@wsong](https://github.com/wsong))

* Fix CVE-2019-11247: API server allows access to custom resources via wrong scope ([#80750](https://github.com/kubernetes/kubernetes/pull/80750))

See also the [security announcement for this release](https://groups.google.com/forum/#!topic/kubernetes-security-announce/vUtEcSEY6SM).

# v1.15.1

## Changelog since v1.19.0

## Changes by Kind

### Bug or Regression

- Azure: fix a bug that kube-controller-manager would panic if wrong Azure VMSS name is configured ([#94306](https://github.com/kubernetes/kubernetes/pull/94306), [@knight42](https://github.com/knight42)) [SIG Cloud Provider]
- Build/lib/release: Explicitly use '--platform' in building server images