+-----------------------------------------------+
| MyBB 1.1.8 Security Update                    |
| 	Manual Patch Instructions                   |
|                                               |
| Please note:                                  |
|   This patch should only be applied to boards |
|   running MyBB 1.1.x                          |
|                                               |
+-----------------------------------------------+

---------------------------
1. inc/functions_upload.php
---------------------------

Find:
--
if($img_dimensions[2] != $img_type)
{
	@unlink($mybb->settings['uploadspath']."/".$filename);
	$ret['error'] = $lang->error_uploadfailed;
	return $ret;		
}
--

Replace with:
--
if(!is_array($img_dimensions) || $img_dimensions[2] != $img_type)
{
	@unlink($mybb->settings['uploadspath']."/".$filename);
	$ret['error'] = $lang->error_uploadfailed;
	return $ret;		
}
--


ALL DONE