Sequoia (CVE-2021-33909)

Building

gcc exploit.c -o exploit

Running

chmod +x exploit
./exploit

One-Liner

gcc exploit.c -o exploit;chmod +x exploit;./exploit

Credits

https://blog.qualys.com/vulnerabilities-threat-research/2021/07/20/sequoia-a-local-privilege-escalation-vulnerability-in-linuxs-filesystem-layer-cve-2021-33909