* srec.c (srec_get_section_contents): Return immediately on

	count zero.  Check that offset and count are within section.
	* libbfd.c (_bfd_generic_get_section_contents): Check that
	offset + count does not overflow.

1 files changed, 11 insertions, 1 deletions

diff --git a/bfd/srec.c b/bfd/srec.c
index a5f588c..ebb039b 100644
--- a/bfd/srec.c
+++ b/bfd/srec.c
@@ -781,10 +781,20 @@ srec_get_section_contents (bfd *abfd,
 			   file_ptr offset,
 			   bfd_size_type count)
 {
+  if (count == 0)
+    return TRUE;
+
+  if (offset + count < count
+      || offset + count > section->size)
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return FALSE;
+    }
+
   if (section->used_by_bfd == NULL)
     {
       section->used_by_bfd = bfd_alloc (abfd, section->size);
-      if (section->used_by_bfd == NULL && section->size != 0)
+      if (section->used_by_bfd == NULL)
 	return FALSE;
 
       if (! srec_read_section (abfd, section, section->used_by_bfd))