We need to verify that the "data_offset" is within bounds.
Reported-by: NDr Silvio Cesare of InfoSect <silvio.cesare@gmail.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NSteve French <stfrench@microsoft.com>
Reviewed-by: NAurelien Aptel <aaptel@suse.com>