Baron Samedit (CVE-2021-3156) is a heap overflow vulnerability in the sudo software disclosed by Qualys in 2021.
This bug affects versions 1.8.2 to 1.8.31p2 and 1.9.0 to 1.9.5p1 in their default configurations.
This affects Ubuntu 20.04, Debian 10, Fedora 33 and several others.
https://github.com/worawit/CVE-2021-3156
https://www.exploit-db.com/exploits/49522
https://github.com/CptGibbon/CVE-2021-3156