Patches are available
Linux vendors have also released patches for the sudo vulnerability, including
This vulnerability in sudo has been present for nearly 10 years, all sudo versions prior to sudo 1.9.5p2 are to be considered vulnerable. The issue is Linux is embedded everywhere, yet many systems are rarely, and even never updated. From IoT devices to internet-based services, the security of countless devices and web-based services' are dependant upon a secure Linux account privilege model. While their Linux operating systems remain unpatched to prevent exploitation of the CVE-2021-3156 vulnerability, they sit there insecure and waiting to be hacked.