CM Punk Has Knee Surgery, Likely Out Of TLC

Source

From Meltzer:

The WWE web site reported that the surgery to C.M. Punk was arthroscopic
in nature, and Dr. James Andrews trimmed a cartilage tear that had
caused his knee to lock up.

Given the nature of the surgery, he is only expected out of action a few weeks.

 No word on if the title will be vacated or if the PPV will be changed.