cve/2021/CVE-2021-43395.md

### [CVE-2021-43395](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43395)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3F%20n%2Fa%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923. A local unprivileged user can cause a deadlock and kernel panic via crafted rename and rmdir calls on tmpfs filesystems. Oracle Solaris 10 and 11 is also affected.

### POC

#### Reference
- https://jgardner100.wordpress.com/2022/01/20/security-heads-up/
- https://kebe.com/blog/?p=505
- https://www.illumos.org/issues/14424
- https://www.oracle.com/security-alerts/cpujan2022.html

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