--- binutils.orig/bfd/peXXigen.c	2018-05-17 11:46:03.979280220 +0100

+++ binutils-2.27/bfd/peXXigen.c	2018-05-17 12:56:36.402304487 +0100

@@ -2964,6 +2964,15 @@ _bfd_XX_bfd_copy_private_bfd_data_common

 				  bfd_get_section_size (section) - (addr - section->vma));

 	      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++)