Issue #12213: Fix a buffering bug with interleaved reads and writes that
could appear on io.BufferedRandom streams.
diff --git a/Misc/NEWS b/Misc/NEWS
index 331ac4e..0701d6f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -40,6 +40,9 @@
 Library
 -------
 
+- Issue #12213: Fix a buffering bug with interleaved reads and writes that
+  could appear on io.BufferedRandom streams.
+
 - Issue #12326: sys.platform is now always 'linux2' on Linux, even if Python
   is compiled on Linux 3.