diff --git a/cpp/src/parquet/decoder.cc b/cpp/src/parquet/decoder.cc
index 3bcdc55d8e9e..57a2316bf41b 100644
--- a/cpp/src/parquet/decoder.cc
+++ b/cpp/src/parquet/decoder.cc
@@ -260,6 +260,13 @@ auto DispatchArrowBinaryHelper(typename EncodingTraits<DType>::Accumulator* acc,
   }
 }
 
+void CheckPageLargeEnough(int64_t remaining_bytes, int32_t value_width,
+                          int64_t num_values) {
+  if (remaining_bytes < value_width * num_values) {
+    ParquetException::EofException();
+  }
+}
+
 // Internal decoder class hierarchy
 
 class DecoderImpl : virtual public Decoder {
@@ -385,9 +392,7 @@ int PlainDecoder<DType>::DecodeArrow(
 
   constexpr int value_size = static_cast<int>(sizeof(value_type));
   int values_decoded = num_values - null_count;
-  if (ARROW_PREDICT_FALSE(this->len_ < value_size * values_decoded)) {
-    ParquetException::EofException();
-  }
+  CheckPageLargeEnough(this->len_, value_size, values_decoded);
 
   const uint8_t* data = this->data_;
 
@@ -419,9 +424,7 @@ int PlainDecoder<DType>::DecodeArrow(
 
   constexpr int value_size = static_cast<int>(sizeof(value_type));
   int values_decoded = num_values - null_count;
-  if (ARROW_PREDICT_FALSE(this->len_ < value_size * values_decoded)) {
-    ParquetException::EofException();
-  }
+  CheckPageLargeEnough(this->len_, value_size, values_decoded);
 
   const uint8_t* data = this->data_;
 
@@ -659,9 +662,7 @@ inline int PlainDecoder<FLBAType>::DecodeArrow(
     typename EncodingTraits<FLBAType>::Accumulator* builder) {
   const int byte_width = this->type_length_;
   const int values_decoded = num_values - null_count;
-  if (ARROW_PREDICT_FALSE(len_ < byte_width * values_decoded)) {
-    ParquetException::EofException();
-  }
+  CheckPageLargeEnough(len_, byte_width, values_decoded);
 
   PARQUET_THROW_NOT_OK(builder->Reserve(num_values));
 
@@ -691,9 +692,7 @@ inline int PlainDecoder<FLBAType>::DecodeArrow(
     typename EncodingTraits<FLBAType>::DictAccumulator* builder) {
   const int byte_width = this->type_length_;
   const int values_decoded = num_values - null_count;
-  if (ARROW_PREDICT_FALSE(len_ < byte_width * values_decoded)) {
-    ParquetException::EofException();
-  }
+  CheckPageLargeEnough(len_, byte_width, values_decoded);
 
   PARQUET_THROW_NOT_OK(builder->Reserve(num_values));
   PARQUET_THROW_NOT_OK(
diff --git a/testing b/testing
index 7b94287bd0ed..fbf6b703dc93 160000
--- a/testing
+++ b/testing
@@ -1 +1 @@
-Subproject commit 7b94287bd0ed7436aaf6a5fda60eda002f6d9d1c
+Subproject commit fbf6b703dc93d17d75fa3664c5aa2c7873ebaf06