### [CVE-2021-3659](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3659)
![](https://img.shields.io/static/v1?label=Product&message=Kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Fixed%20in%20Kernel%205.12%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-252%20-%20Unchecked%20Return%20Value%2C%20CWE-476%20-%20NULL%20Pointer%20Dereference&color=brightgreen)

### Description

A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.

### POC

#### Reference
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8

#### Github
No PoCs found on GitHub currently.