### [CVE-2021-3564](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3564)
![](https://img.shields.io/static/v1?label=Product&message=kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20All%20Linux%20kernel%20versions%20starting%20from%203.13%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-415&color=brighgreen)

### Description

A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13.

### POC

#### Reference
- http://www.openwall.com/lists/oss-security/2021/05/25/1
- http://www.openwall.com/lists/oss-security/2021/06/01/2
- https://www.openwall.com/lists/oss-security/2021/05/25/1

#### Github
- https://github.com/ARPSyndicate/cvemon