What's wrong with this CD?

They are called "pinholes" and are more likely a manufacturing defect.  The very few CD's of mine that I have seen this on play fine as the data correction in the cd player can usually fill in these gaps.

CD rot is the culprit,look it up.

That's interesting. I've never noticed that on mine.

I have been using CD's since they first came out and don't have any rot.  I think it's a myth.

@tpreaves I did. From what I read and the photos I saw on line didn't look like what I see on my disc. It's only about the size of a pencil tip where the aluminum is missing.