Information Exposure in MSM_DMA_IORBUF Ioctl Command in dma_test Device (CVE-2016-3894)

Release Date:

October 3, 2016

Affected Projects:

Android for MSMFirefox OS for MSMQRD Android

Advisory ID:

QCIR-2016-00042-1

CVE ID(s):

CVE-2016-3894

Summary:

When invoking the MSM_DMA_IORBUF ioctl command on the dma_test device, an information disclosure occurs when uninitialized kernel memory is read.

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-2016-3894: https://source.codeaurora.org/quic/la/kernel/msm-3.10/commit/?id=de3e3e5930b1edfebec7870390443279ec5b65fe

Acknowledgement:

Qualcomm Innovation Center, Inc. (QuIC) thanks Google for bringing this issue to our attention. This issue was reported to Google through the Android Security Rewards program.

Revisions:

Initial

Contact: