Not so outdated. No Ubuntu version has the fix up to now. They think 18.04 is not affected [1] Ubuntu 21.10 Needed Ubuntu 21.04 Ignored (reached end-of

Not so outdated. No Ubuntu version has the fix up to now. They think 18.04 is not affected [1] Ubuntu 21.10 Needed Ubuntu 21.04 Ignored (reached end-of-life) Ubuntu 20.04 Needed Ubuntu 18.04 Not vulnerable (code not present) [1] https://ubuntu.com/security/CVE-2021-4122 https://ubuntu.com/security/CVE-2021-4122