--- binutils.orig/bfd/peXXigen.c	2018-07-11 14:28:44.937231840 +0100
+++ binutils-2.29.1/bfd/peXXigen.c	2018-07-11 14:29:27.861771394 +0100
@@ -2992,6 +2992,16 @@ _bfd_XX_bfd_copy_private_bfd_data_common
 	      return FALSE;
 	    }
 
+	  /* PR 23110.  */
+	  else if (ope->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size < 0)
+	    {
+	      /* xgettext:c-format */
+	      _bfd_error_handler
+		(_("%pB: Data Directory size (%#lx) is negative"),
+		 obfd, ope->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size);
+	      return FALSE;
+	    }
+
           for (i = 0; i < ope->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
 		 / sizeof (struct external_IMAGE_DEBUG_DIRECTORY); i++)
             {