Merge pull request #83436 from liggitt/automated-cherry-pick-of-#83261-upstream-release-1.13-1570075716

[1.13] Automated cherry pick of #83261: bump gopkg.in/yaml.v2 v2.2.4

Kubernetes-commit: 17c28f0e1c6733b02a62471c813b262df7681789

vendor/k8s.io/apimachinery/pkg/runtime/serializer/json/json.go

@@ -100,7 +100,27 @@ func (customNumberDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
 		}
 		iter.ReportError("DecodeNumber", err.Error())
 	default:
+		// init depth, if needed
+		if iter.Attachment == nil {
+			iter.Attachment = int(1)
+		}
+
+		// remember current depth
+		originalAttachment := iter.Attachment
+
+		// increment depth before descending
+		if i, ok := iter.Attachment.(int); ok {
+			iter.Attachment = i + 1
+			if i > 10000 {
+				iter.ReportError("parse", "exceeded max depth")
+				return
+			}
+		}
+
 		*(*interface{})(ptr) = iter.Read()
+
+		// restore current depth
+		iter.Attachment = originalAttachment
 	}
 }