CVE-2016-8439: Possible buffer overflow in trust zone access control API.

Security readout for executives and security teams

This CVE describes a possible buffer overflow in Android Kernel 3.18 code related to a TrustZone access control API. The source bundle does not state impact, affected device models, exploitability, or a CVSS score, so urgency depends on whether your Android fleet still contains affected builds. Exposure is most plausible on Android devices running Kernel 3.18 builds that include the vulnerable TrustZone access control API. The bundle does not identify specific OEMs, device models, chipsets, or firmware versions. Treat this as a legacy Android exposure question, not a confirmed emergency. Prioritize identifying unsupported Kernel 3.18 devices and ensuring they are patched, replaced, or isolated. Mitigation focus: Check Android and OEM guidance for A-31625204 or CVE-2016-8439 coverage.; Apply relevant Android security updates to affected Kernel 3.18 devices.; Retire or isolate unsupported Android Kernel 3.18 devices..

Prepared

Jun 13, 2026, 12:51 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.