The patch has been taken from community and fixes Integer overflow.
The details can be found in the following location
https://bugs.ghostscript.com/show_bug.cgi?id=697179

--- ghostscript-9.20/base/gsdevice.c	2016-09-26 03:41:28.000000000 -0700
+++ ghostscript-9.20/base/gsdevice.c	2016-11-23 21:54:31.426884075 -0800
@@ -614,6 +614,7 @@
     dev->memory = mem;
     dev->retained = !internal;
     rc_init(dev, mem, (internal ? 0 : 1));
+    rc_increment(dev->icc_struct);
 }
 
 void