RNZ reports both players have been cited for dangerous tackles.
Cane stayed on the field after his incident in the 11th minute, which left Irish mid-fielder Robbie Henshaw unconscious, while Fekiota was yellow-carded for a head high tackle in the second half.
Cane is unavailable for this weekend's game against France after picking up a high ankle sprain in yesterday's game.
Fullback Ben Smith is also unavailable after breaking a finger.
Lock Patrick Tuipulotu is returning home for personal reasons.
No replacements will be brought into the squad.