Issue #6274. Fixed a potential FD leak in subprocess.py.
diff --git a/Misc/NEWS b/Misc/NEWS
index 9ccb472..9adcfdf 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -15,6 +15,8 @@
 Library
 -------
 
+- Issue #6274: Fixed possible file descriptors leak in subprocess.py
+
 - Accessing io.StringIO.buffer now raises an AttributeError instead of
   io.UnsupportedOperation.