--- binutils.orig/binutils/dwarf.c	2018-05-01 11:42:02.656431736 +0100

+++ binutils-2.30/binutils/dwarf.c	2018-05-01 11:43:24.210383020 +0100

@@ -9244,7 +9244,18 @@ process_cu_tu_index (struct dwarf_sectio

 		}

 	      if (!do_display)

-		memcpy (&this_set[row - 1].signature, ph, sizeof (uint64_t));

+		{

+		  size_t num_copy = sizeof (uint64_t);

+

+		  /* PR 23064: Beware of buffer overflow.  */

+		  if (ph + num_copy < limit)

+		    memcpy (&this_set[row - 1].signature, ph, num_copy);

+		  else

+		    {

+		      warn (_("Signature (%p) extends beyond end of space in section\n"), ph);

+		      return 0;

+		    }

+		}

 	      prow = poffsets + (row - 1) * ncols * 4;

 	      /* PR 17531: file: b8ce60a8.  */