Scoop ice cream into eight 1/2-cup-sized balls. Place on a baking sheet and freeze until firm, about 2 hours.
Pulverize the vanilla wafers, cornflakes, and cinnamon in a food processor until coarse.
In a separate bowl, beat egg whites until very foamy.
Roll ice cream balls in egg whites, then in cornflake mixture, covering completely. If necessary, repeat to ensure a thick coating. Freeze again until firm, about 2 hours.
Heat oil in a deep-fryer or large, heavy saucepan to 375 degrees F (190 degrees C). Use a slotted spoon to fry ice cream balls one at a time until golden, about 10 seconds each.
Drain quickly on paper towels and serve immediately.