CVE-2017-6248

Vulnerability

The NVIDIA sound driver on Android contains an elevation of privilege vulnerability. A local application that has already compromised a privileged process can trigger the vulnerability to execute arbitrary code at the kernel level. The vulnerability affects Android builds covered by the June 2017 security patch level [1].

Exploitation

Exploitation requires an attacker to first compromise a privileged process on the device (e.g., through another vulnerability or social engineering). Once achieved, the attacker can execute a specially crafted IOCTL call to the sound driver, leveraging the bug to escalate privileges to the kernel. No user interaction is needed beyond installing the malicious application.

Impact

Successful exploitation grants arbitrary code execution in the kernel context, allowing the attacker to fully compromise the device, including gaining root access and bypassing Android security mechanisms.

Mitigation

The vulnerability is fixed in the Android Security Bulletin for June 2017 [1]. Users should apply the latest security update to their devices. No workaround is available.