Are Google Nexus and Samsung Galaxy devices the only safe Android phones?

SAN FRANCISCO, CA - SEPTEMBER 29: The Google logo is displayed on the new Nexus 5X phone during a Google media event on September 29, 2015 in San Francisco, California. Google unveiled its 2015 smartphone lineup, the Nexus 5x and Nexus 6P, the new Chromecast and new Android 6.0 Marshmallow software features. Justin Sullivan/Getty Images/AFP == FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==

A vulnerability has been discovered in Android's full-disk encryption (FDE) on devices running Qualcomm chips, and this includes the latest flagships as well. 

Google's struggles with the security aspect of its smartphone operating system, Android, are well documented. And things just got worse for the platform. The latest vulnerability includes both hardware and software elements in an Android phone.