At the very least, you can get your computer and networking equipment seized. Tor's own FAQ says you shouldn't run exit nodes at home:
"Should I run an exit relay from my home?
No. If law enforcement becomes interested in traffic from your exit relay, it's possible that officers will seize your computer. For that reason, it's best not to run your exit relay in your home or using your home Internet connection."
"Should I run an exit relay from my home?
No. If law enforcement becomes interested in traffic from your exit relay, it's possible that officers will seize your computer. For that reason, it's best not to run your exit relay in your home or using your home Internet connection."