diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/JsonSerializer.Read.Stream.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/JsonSerializer.Read.Stream.cs
index 75328f71473c36..d804cca460c2bd 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/JsonSerializer.Read.Stream.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/JsonSerializer.Read.Stream.cs
@@ -553,10 +553,11 @@ public static partial class JsonSerializer
             {
                 Debug.Assert(listTypeInfo.IsConfigured);
 
-                ReadBufferState bufferState = new(listTypeInfo.Options.DefaultBufferSize);
                 ReadStack readStack = default;
                 readStack.Initialize(listTypeInfo, supportContinuation: true);
                 JsonReaderState jsonReaderState = new(readerOptions);
+                // Note: The ReadBufferState ctor rents pooled buffers.
+                ReadBufferState bufferState = new(listTypeInfo.Options.DefaultBufferSize);
 
                 try
                 {
diff --git a/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/Metadata/JsonTypeInfoOfT.ReadHelper.cs b/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/Metadata/JsonTypeInfoOfT.ReadHelper.cs
index bfe0f394d42717..3ea5e94b8ce9cb 100644
--- a/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/Metadata/JsonTypeInfoOfT.ReadHelper.cs
+++ b/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/Metadata/JsonTypeInfoOfT.ReadHelper.cs
@@ -26,10 +26,11 @@ public partial class JsonTypeInfo<T>
         {
             Debug.Assert(IsConfigured);
             JsonSerializerOptions options = Options;
-            var bufferState = new ReadBufferState(options.DefaultBufferSize);
             ReadStack readStack = default;
             readStack.Initialize(this, supportContinuation: true);
             var jsonReaderState = new JsonReaderState(options.GetReaderOptions());
+            // Note: The ReadBufferState ctor rents pooled buffers.
+            ReadBufferState bufferState = new(options.DefaultBufferSize);
 
             try
             {
@@ -58,10 +59,11 @@ public partial class JsonTypeInfo<T>
         {
             Debug.Assert(IsConfigured);
             JsonSerializerOptions options = Options;
-            var bufferState = new ReadBufferState(options.DefaultBufferSize);
             ReadStack readStack = default;
             readStack.Initialize(this, supportContinuation: true);
             var jsonReaderState = new JsonReaderState(options.GetReaderOptions());
+            // Note: The ReadBufferState ctor rents pooled buffers.
+            ReadBufferState bufferState = new(options.DefaultBufferSize);
 
             try
             {