I have a list of about a dozen small errors I've personally discovered in my thesis. Is it advisable to have a slide during the presentation listing these? I understand that this is superfluous, insofar that the examiners will probably already have identified these, but I want to look as if I am aware of them coming into the defense. Is there any possibility it could be considered insulting?
I wouldn't suggest a slide for what is probably just a minor matter.
However, you could print out a list of them, deliver them to the committee prior to the event and say they will be corrected in the final version.
It may even happen that one or more of your committee members will have read your dissertation (shocking, I know) and will provide you with a few more.
But for the talk, focus on the insights in the work, not such minor details. Most people attending talks want that, in any case. The details can be found in the paper.