CVE-2021-0640 Memory corruption in Android
A missing bounds check in Android's StatsdStats allows local attackers to perform an out-of-bounds write, leading to privilege escalation without user interaction.
- 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-2021-0640?
CVE-2021-0640 is a high-severity memory corruption vulnerability in Google Android, published on 17 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In noteAtomLogged of StatsdStats.cpp, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-9Android ID: A-187957589
Weakness: CWE-787
Which versions are affected by CVE-2021-0640?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0640?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-0640 being exploited?
There is no known exploitation of CVE-2021-0640 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Google Android
Sources
Also known as A-187957589, ASB-A-187957589, GHSA-x75x-rr26-fwqf.