CVEs-PoC/2021/CVE-2021-3454.md

### [CVE-2021-3454](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3454)
![](https://img.shields.io/static/v1?label=Product&message=zephyr&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=2.4.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=v.2.50%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Improper%20Handling%20of%20Length%20Parameter%20Inconsistency%20(CWE-130)&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Reachable%20Assertion%20(CWE-617)&color=brightgreen)

### Description

Truncated L2CAP K-frame causes assertion failure. Zephyr versions >= 2.4.0, >= v.2.50 contain Improper Handling of Length Parameter Inconsistency (CWE-130), Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/asset-group/vakt-ble-defender