CVEs-PoC/2021/CVE-2021-3321.md

### [CVE-2021-3321](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3321)
![](https://img.shields.io/static/v1?label=Product&message=zephyr&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3E%3D2.4.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Integer%20Overflow%20to%20Buffer%20Overflow%20(CWE-680)&color=brightgreen)

### Description

Integer Underflow in Zephyr in IEEE 802154 Fragment Reassembly Header Removal. Zephyr versions >= >=2.4.0 contain Integer Overflow to Buffer Overflow (CWE-680). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99

### POC

#### Reference
- http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w44j-66g7-xw99

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