CVE-2021-39719 Integer overflow in Android
An integer overflow in the Android kernel allows local attackers with system privileges to escalate privileges via an out-of-bounds write.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-39719?
CVE-2021-39719 is a medium-severity vulnerability in Google Android, published on 16 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In lwis_top_register_io of lwis_device_top.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-205995178References: N/A
Which versions are affected by CVE-2021-39719?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-39719?
Apply the vendor's patch.
Is CVE-2021-39719 being exploited?
There is no known exploitation of CVE-2021-39719 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-205995178, GHSA-4f8x-8m63-7qx4, PUB-A-205995178.