CVE-2021-0601 Use after free in Android

Medium 5.5 Published 14 Jul 2021 Updated 3 Aug 2024

A double free vulnerability in Android's AVC encoder allows local attackers to disclose sensitive information without user interaction or elevated privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2021-0601?

CVE-2021-0601 is a medium-severity use after free vulnerability in Google Android, published on 14 Jul 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In encodeFrames of avc_enc_fuzzer.cpp, there is a possible out of bounds write due to a double free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-180643802

Weakness: CWE-787, CWE-415

Which versions are affected by CVE-2021-0601?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-0601?

Apply the vendor's patch.

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-2021-0601 being exploited?

There is no known exploitation of CVE-2021-0601 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as A-180643802, ASB-A-180643802, GHSA-xj92-rmr8-86pw.