Buffer Overflow Vulnerability When Processing SMD write ioctl in generic USB serial function driver (CVE-2016-2502)

Release Date:

June 22, 2016

Affected Projects:

Android for MSMFirefox OS for MSMQRD Android

Advisory ID:

QCIR-2016-00017-1

CVE ID(s):

CVE-2016-2502

Summary:

The following security vulnerabilities have been identified in QuIC-authored generic USB serial function driver code. CVE-2016-2502 A buffer overflow occurs when processing the GSERIAL_SMD_WRITE ioctl in the gser_ioctl function because an untrusted user space value is used as the length when copying data from user space to kernel space.

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

• Check for SMD data length in GSER_IOCTL: https://www.codeaurora.org/gitweb/quic/la/?p=kernel/msm-3.10.git;a=commit;h=0bc45d7712eabe315ce8299a49d16433c3801156

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

Contact: