NULL pointer dereference when processing accept system call by user process on AF_MSM_IPC sockets (CVE-2016-5870)

Release Date:

November 30, 2016

Affected Projects:

Android for MSMFirefox OS for MSMQRD Android

Advisory ID:

QCIR-2016-00069-1

CVE ID(s):

CVE-2016-5870

Summary:

The following security vulnerabilities have been identified: CVE-2016-5870 Fail cases of accept() system call on AF_MSM_IPC socket family causes NULL pointer de-reference of sock structure variable in release operation.

Access Vector: Local

Security Risk: Medium

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-2016-5870: https://www.codeaurora.org/gitweb/quic/la/?p=kernel/msm-3.18.git;a=commit;h=71fe5361cbef34e2d606b79e8936a910a3e95566

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:

Second revision. The original posting had an incorrect CVE ID, it should be CVE-2016-5870

Contact: