No - unless you have specifically led the buyer to believe that it is a different Tom Cruise. e.g. if you have not published a photograph of your photograph on ebay, then it's up to them. They could only complain if you published a photograph of a photograph other than the one that you were selling.
But what could happen bernardo is you could sign a picture of the real Tom Cruise. I think on e-bay there would be little you could do but in a shop that would be misleading advertising.