cve/2021/CVE-2021-32844.md

### [CVE-2021-32844](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32844)
![](https://img.shields.io/static/v1?label=Product&message=hyperkit&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0.20210107%3C%3D%200.20210107%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-476%20NULL%20Pointer%20Dereference&color=brighgreen)

### Description

HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, ` vi_pci_write` has is a call to `vc_cfgwrite` that does not check for null which when called makes the host crash. This issue may lead to a guest crashing the host causing a denial of service. This issue is fixed in commit 451558fe8aaa8b24e02e34106e3bb9fe41d7ad13.

### POC

#### Reference
- https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/

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