### [CVE-2021-38203](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38203) ![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue) ![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue) ![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen) ### Description btrfs in the Linux kernel before 5.13.4 allows attackers to cause a denial of service (deadlock) via processes that trigger allocation of new system chunks during times when there is a shortage of free space in the system space_info. ### POC #### Reference - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 #### Github No PoCs found on GitHub currently.