The official notice
Defect
On certain vehicles equipped with a manual transmission, a connector for the electronic parking brake (EPB) could disconnect. If this happens, you won't be able to apply the parking brake and the vehicle could roll away. If this happens and the parking brake is set, you won't be able release it. Note: This problem will cause the brake warning lamp to turn on or flash.
Safety Risk
A parked vehicle that moves unexpectedly could increase the risk of an injury or a crash.
Remedy
Subaru will notify owners by mail and instruct you to take your vehicle to a dealership to inspect the adapter cord connector for the electronic parking brake, and if necessary, install an additional retaining clip. To reduce the safety risk, Subaru recommends that you should park the vehicle in a flat location and leave the transmission in gear whenever possible until the recall repairs have been completed. Additionally, when parking uphill, the front wheels should be turned away from the curb and the shift lever should be placed into first gear. When parking downhill, the front wheels should be turned into the curb and the shift lever should be placed into reverse gear.