Issue #12213: Fix a buffering bug with interleaved reads and writes that
could appear on BufferedRandom streams.
diff --git a/Misc/NEWS b/Misc/NEWS
index 7dc106a..29a2e6f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -265,6 +265,9 @@
 Library
 -------
 
+- Issue #12213: Fix a buffering bug with interleaved reads and writes that
+  could appear on BufferedRandom streams.
+
 - Issue #12778: Reduce memory consumption when JSON-encoding a large
   container of many small objects.