It's not unsafe, but the quality may suffer with longer exposure.
Can you still eat freezer-burned steak? - Quora
Is It Safe to Eat Freezer Burned Food?
Can You Eat Freezer-Burned Food?
What Is Freezer Burn, and What Causes It? - Thrillist
Can Freezer Burned Food Make You Sick?
How To Save Freezer Burned Food
Is It Safe to Eat Freezer-Burned Food?
Is It Safe To Eat Freezer Burned Food?
Is It Safe to Eat Freezer-Burned Food?
How to avoid food poisoning this Christmas – and the dreaded freezer burn, UK News
How To Save Freezer Burned Food
Is It Safe to Eat Freezer Burned Food?
Is It Safe to Eat Freezer Burned Food?, Food Network Healthy Eats: Recipes, Ideas, and Food News