User-controlled index leading to kernel memory write in MDSS MDP overlay drivers (CVE-2016-3938)

Release Date:

October 3, 2016

Affected Projects:

Android for MSMFirefox OS for MSMQRD Android

Advisory ID:

QCIR-2016-00051-1

CVE ID(s):

CVE-2016-3938

Summary:

The following security vulnerabilities have been identified: CVE-2016-3938 If the data sent from user space sends z_order value to the overlay ioctl which is equal to or more than 9 (max stage value), memory write out of bounds occurs.

Access Vector: Local

Security Risk: High

Access Vector: Local

Affected Versions:

All Android releases from CAF using the Linux kernel.

Patch:

We advise customers to apply the following patches:

Individual Patches

• CVE-2016-3938: https://source.codeaurora.org/quic/la/kernel/msm-3.18/commit/?id=f63ee9ad46f94bb82ae28e968ca2cd959fec9fda

Note

This issue has been published in the Android Security Bulletin—October 2016

Acknowledgement:

This issue was reported to Google by an external security researcher. Qualcomm Innovation Center, Inc. (QuIC) thanks Google for bringing this issue to QuIC's attention.

Revisions:

Initial revision

Contact: