CVEs-PoC/2021/CVE-2021-3847.md

### [CVE-2021-3847](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3847)
![](https://img.shields.io/static/v1?label=Product&message=kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=all%20versions%20up%20to%2C%20including%2C%20kernel%205.17%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-281&color=brightgreen)

### Description

An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/bygregonline/devsec-fastapi-report
- https://github.com/robertsirc/sle-bci-demo
- https://github.com/shakyaraj9569/Documentation