CVE-2023-20928 Use after free in Android
A use-after-free vulnerability in the Android kernel binder driver allows local attackers to escalate privileges 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-2023-20928?
CVE-2023-20928 is a high-severity use after free vulnerability in Google Android, published on 24 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In binder_vma_close of binder.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-254837884References: Upstream kernel
Which versions are affected by CVE-2023-20928?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2023-20928?
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-2023-20928 being exploited?
There is no known exploitation of CVE-2023-20928 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-254837884, ASB-A-254837884, DEBIAN-CVE-2023-20928, GHSA-fvjw-c4jh-fp27, UBUNTU-CVE-2023-20928.