go32 sanity check

* coff-stgo32 (go32exe_check_format): Sanity check stubsize against filesize before malloc.
2022-11-17 07:33:55 +10:30
parent 31f221d0bc
commit 7828dfa93b
1 changed files with 4 additions and 0 deletions
@@ -291,6 +291,10 @@ go32exe_check_format (bfd *abfd)
  if (last_page_size != 0)
    stubsize += last_page_size - 512;

+  ufile_ptr filesize = bfd_get_file_size (abfd);
+  if (filesize != 0 && stubsize > filesize)
+    goto fail_format;
+
  /* Save now the stub to be used later.  Put the stub data to a temporary
     location first as tdata still does not exist.  It may not even
     be ever created if we are just checking the file format of ABFD.  */