CVEs-PoC/2021/CVE-2021-40565.md

### [CVE-2021-40565](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40565)
![](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

A Segmentation fault caused by a null pointer dereference vulnerability exists in Gpac through 1.0.1 via the gf_avc_parse_nalu function in av_parsers.c when using mp4box, which causes a denial of service.

### POC

#### Reference
- https://github.com/gpac/gpac/commit/893fb99b606eebfae46cde151846a980e689039b
- https://github.com/gpac/gpac/issues/1902

#### Github
- https://github.com/s-cube-xmu/Bug_List