CVE-2022-20521 Null dereference in Android
A missing null check in the Android Bluetooth stack allows local attackers to cause a denial of service via user interaction.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2022-20521?
CVE-2022-20521 is a medium-severity vulnerability in Google Android, published on 16 Dec 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In sdpu_find_most_specific_service_uuid of sdp_utils.cc, there is a possible way to crash Bluetooth due to a missing null check. This could lead to local denial of service with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-227203684
Weakness: CWE-476
Which versions are affected by CVE-2022-20521?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2022-20521?
Apply the vendor's patch.
Is CVE-2022-20521 being exploited?
There is no known exploitation of CVE-2022-20521 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-227203684, GHSA-pfq9-gmxf-fp7r, PUB-A-227203684.