Full-back Kearney picked up a calf problem during the 26-14 win over France on Sunday and is now doubtful, while fly-half Carbery missed out altogether with a hamstring injury.
Ireland scrum coach Greg Feek says both players will be monitored in training over the next couple of days before a decision is made on whether they make the trip to Cardiff.
"To be honest, we'll have to wait and see. At the moment, they're ready to rock and roll," Feek said. "It was a precautionary thing for Rob last week so we're hoping that he's fine but again he's the best judge of that at the end of the day.
"Getting out there with the boots on will be the key factor, so we'll see how they go (in training). They're getting their boots on and we'll have a light run around."
Meanwhile, Josh Van Der Flier will definitely miss out with a groin injury, but Dan Leavy is fit after ankle trouble, while Sean O'Brien is also back in the squad.