CVEs-PoC/2021/CVE-2021-0320.md

### [CVE-2021-0320](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0320)
![](https://img.shields.io/static/v1?label=Product&message=Android&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Android-10%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=Android-11%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Information%20disclosure&color=brightgreen)

### Description

In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Android ID: A-169933423.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/TinyNiko/android_bulletin_notes