The Blackberry Priv has received yet another update. The company officially ended support for the device a few months ago but promised that patches would be sent out in the event of a vulnerability being found. This appears to be one of such events.
https://www.notebookcheck.net/Months-after-reaching-the-end-of-its-life-the-Blackberry-Priv-receives-an-update.296428.0.html