CVE-2018-3598

Vulnerability

The Qualcomm camera driver in Android for MSM, Firefox OS for MSM, and QRD Android with all Android releases from CAF using the Linux kernel before security patch level 2018-04-05 contains insufficient validation of parameters passed from userspace [1]. This flaw resides in the camera driver's handling of input from user applications, allowing an attacker to trigger an out-of-bounds read or write condition.

Exploitation

An attacker requires the ability to pass crafted parameters to the camera driver via a malicious application. No additional authentication is needed beyond normal application permissions. The attacker must craft specific userspace parameters that bypass the insufficient validation checks, leading to the driver accessing memory outside the intended buffer boundaries.

Impact

Successful exploitation can lead to an information leak (disclosure of kernel memory) or out-of-bounds access, potentially allowing the attacker to read sensitive data or corrupt kernel memory. This could result in escalation of privileges or a system crash.

Mitigation

The issue is fixed in the Android security patch level 2018-04-05 [1]. Users should ensure their devices have received the April 2018 security update. No workaround is provided for unpatched devices.