[Bug 2063200] [NEW] useradd --extrausers --groups tries to lock /etc/group

[Valentin David]

Public bug reported:

On Ubuntu Core 24 calling the command line

useradd --extrausers --groups somegroup somenewuser

... fails with:

useradd: cannot lock /etc/group; try again later.

It worked on 22.04. /etc is not writable. It also fails if somegroup is
a group in extrausers.

** Affects: shadow (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  useradd --extrausers --groups tries to lock /etc/group

Status in shadow package in Ubuntu:
  New

Bug description:
  On Ubuntu Core 24 calling the command line

  useradd --extrausers --groups somegroup somenewuser

  ... fails with:

  useradd: cannot lock /etc/group; try again later.

  It worked on 22.04. /etc is not writable. It also fails if somegroup
  is a group in extrausers.

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