"Four major security holes in the Qualcomm chips which power modern Android devices have left as many as 900 million users vulnerable to a range of attacks.

According to Israel-based security firm Checkpoint, the flaws—dubbed "Quadrooter"—found in the firmware which governs the chips, could allow potential attackers to "trigger privilege escalations for the purpose of gaining root access to a device" using malware which wouldn't require special permissions, allowing it to pass under suspicious users' radars."

-- source: http://arstechnica.com/security/2016/08/qualcomm-chip-flaws-expose-900-milli...

Cheers, Peter