tree add58b5c16728dd54c72715d47354e572a33cd60
parent f2bfbf7c72f13ce0bd58802379e8b7664adcaf1a
author Peter Lee <peter.lee@hi-p.com> 1477286130 +0800
committer Teemu Hukkanen <teemu@fairphone.com> 1479557185 +0100

FPII-2519 : Elevation of privilege vulnerability in Synaptics touchscreen driver CVE-2016-6742 A-30799828

High

An elevation of privilege vulnerability in the Synaptics touchscreen driver could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process.

Additional technical details:

A-30799828

In the fwu_sysfs_store_image function, there is no validation of the count variable leading to a potential heap overflow.

The fix is designed to add additional bounds checks to prevent the potential heap overflow.

Code snippet provided in bulletin patches zip file in the Downloads section: https://support.google.com/androidpartners_security/answer/7169146?hl=en&ref_topic=6353496#downloads

Change-Id: If99d8b69ed65a81cb81ce2dfa118a575ca511bf1