CVEs-PoC/2021/CVE-2021-40648.md

### [CVE-2021-40648](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40648)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

In man2html 1.6g, a filename can be created to overwrite the previous size parameter of the next chunk and the fd, bk, fd_nextsize, bk_nextsize of the current chunk. The next chunk is then freed later on, causing a freeing of an arbitrary amount of memory.

### POC

#### Reference
- https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933

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