cve/2018/CVE-2018-5843.md

### [CVE-2018-5843](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5843)
![](https://img.shields.io/static/v1?label=Product&message=Android%20for%20MSM%2C%20Firefox%20OS%20for%20MSM%2C%20QRD%20Android&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Improper%20Restriction%20of%20Operations%20within%20the%20Bounds%20of%20a%20memory%20Buffer%20in%20WLAN&color=brighgreen)

### Description

In the function wma_pdev_div_info_evt_handler() in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel, there is no upper bound check on the value event->num_chains_valid received from firmware which can lead to a buffer overwrite of the fixed size chain_rssi_result structure.

### POC

#### Reference
No PoCs from references.

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