### [CVE-2021-20196](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20196)
![](https://img.shields.io/static/v1?label=Product&message=qemu&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20vulnerable%20up%20to%20(including)%20qemu%205.2.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-476&color=brighgreen)

### Description

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

### POC

#### Reference
No PoCs from references.

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