https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-20843

https://github.com/libexpat/libexpat/commit/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6

--- libexpat-R_2_2_5/expat/lib/xmlparse.c.cve20843

+++ libexpat-R_2_2_5/expat/lib/xmlparse.c

@@ -6057,7 +6057,7 @@ setElementTypePrefix(XML_Parser parser,

       else

         poolDiscard(&dtd->pool);

       elementType->prefix = prefix;

-

+      break;

     }

   }

   return 1;