Issue #17710: Fix cPickle raising a SystemError on bogus input.
diff --git a/Misc/NEWS b/Misc/NEWS
index 3ccdb10..fc81740 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -28,6 +28,8 @@
 Library
 -------
 
+- Issue #17710: Fix cPickle raising a SystemError on bogus input.
+
 - Issue #17341: Include the invalid name in the error messages from re about
   invalid group names.