Unexpected default ubuntu user created on launch

[CarlosNihelton]

cmd /c ver

Microsoft Windows [Version 10.0.26200.5001]

wsl --status

wsl --status
Default Distribution: Ubuntu
Default Version: 2

Did the problem occur during installation?

• Yes

What happened?

Either registering an instance of Ubuntu-24.04 via the distro launcher or importing the root filesystem I get an unexpected user named "ubuntu" uid 1000. That happens because cloud-init has a configuration entry in /etc/cloud/cloud.cfg to create that user. When cloud-init is disabled via kernel command line the unexpected user is never created.

What was expected?

No other user accounts should be implicitely created.

Steps to reproduce

ubuntu2204.exe install --root
ubuntu2204.exe run grep ubuntu /etc/passwd

The output of that command should be empty, but it shows a line containing the "ubuntu" user account.

Additional information

The (untouched) configuration file /etc/cloud/cloud.cfg contains the following section:

# System and/or distro specific settings
# (not accessible to handlers/transforms)
system_info:
  # This will affect which distro class gets used
  distro: ubuntu
  # Default user name + that default users groups (if added/used)
  default_user:
    name: ubuntu
    lock_passwd: True
    gecos: Ubuntu
    groups: [adm, cdrom, dip, lxd, sudo]
    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
    shell: /bin/bash

There are no overrides for that key in /etc/cloud/cloud.cgf.d/.

[avlec]

What version / when is this fix available?