The batter attempts to bunt with 2 strikes but POPS it up

[yawetag]

5.09 The ball becomes dead and runners advance one base, or return to their bases, without liability to be put out, when— (e) A foul ball is not caught; runners return. The umpire shall not put the ball in play until all runners have retouched their bases;

6.05 A batter is out when— (a) His fair or foul fly ball (other than a foul tip) is legally caught by a fielder;
Comment: Ball is in play, unless the fielder, after making a legal catch, falls into a dugout or other out-of-play area, in which case the ball is dead.

A CATCH is the act of a fielder in getting secure possession in his hand or glove of a ball in flight and firmly holding it; providing he does not use his cap, protector, pocket or any other part of his uniform in getting possession.