PR 7023

* elf.c (bfd_section_from_shdr <SHT_SYMTAB>): Fail on invalid sh_info.

bfd/ChangeLog

@@ -1,3 +1,8 @@
+2008-11-13  Alan Modra  <amodra@bigpond.net.au>
+
+	PR 7023
+	* elf.c (bfd_section_from_shdr <SHT_SYMTAB>): Fail on invalid sh_info.
+
 2008-11-12  Tristan Gingold  <gingold@adacore.com>
 
 	* bfd.c (bfd_get_sign_extend_vma): Return 0 for mach-o.

bfd/elf.c

@@ -1608,6 +1608,8 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
 
       if (hdr->sh_entsize != bed->s->sizeof_sym)
 	return FALSE;
+      if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
+	return FALSE;
       BFD_ASSERT (elf_onesymtab (abfd) == 0);
       elf_onesymtab (abfd) = shindex;
       elf_tdata (abfd)->symtab_hdr = *hdr;