Likely caused by osquery, which uses the

VERSION_ID

to parse the SEMVER parts:

select * from os_version;
+--------+---------------------------+-------+-------+-------+-------+----------+---------------+----------+--------+
| name   | version                   | major | minor | patch | build | platform | platform_like | codename | arch   |
+--------+---------------------------+-------+-------+-------+-------+----------+---------------+----------+--------+
| Ubuntu | 20.04.3 LTS (Focal Fossa) | 20    | 4     | 0     |       | ubuntu   | debian        | focal    | x86_64 |
+--------+---------------------------+-------+-------+-------+-------+----------+---------------+----------+--------+