CVE-2017-15856 Use after free in Android for MSM, Firefox OS for MSM, QRD Android

High 7.0 Published 6 Jul 2018 Updated 16 Sep 2024

A race condition in the power stats debug file processing leads to a double free, potentially allowing code execution or privilege escalation in Android kernel-based systems.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-15856?

CVE-2017-15856 is a high-severity use after free vulnerability in Google Android, published on 6 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Due to a race condition while processing the power stats debug file to read status, a double free condition can occur in Android releases from CAF using the linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-06-05.

Weakness: CWE-415, CWE-362

Which versions are affected by CVE-2017-15856?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2017-15856?

No fix has been published for CVE-2017-15856 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2017-15856 being exploited?

There is no known exploitation of CVE-2017-15856 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as GHSA-xvqq-827j-2246.