[Bug 2077883] [NEW] usermod silently fails modifying group membership for extrausers

[Gabriel A. Devenyi]

Public bug reported:

Release
Distributor ID: Ubuntu
Description:    Ubuntu 24.04 LTS
Release:        24.04
Codename:       noble

Package:
passwd 1:4.13+dfsg1-4ubuntu3.2

When using the libnss-extrausers package to store users in a seperate DB
at /var/lib/extrausers, the usermod program is unable to edit group
memberships (usermod -a -G <groupname> <username>)

Running group-modifying usermod command fails silently, no error is
generated and the return code is 0, but there is no change at
/var/lib/extrausers

usermod DOES support some extrausers features, I can successfully change
a user's GECOS.

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

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Title:
  usermod silently fails modifying group membership for extrausers

Status in shadow package in Ubuntu:
  New

Bug description:
  Release
  Distributor ID: Ubuntu
  Description:    Ubuntu 24.04 LTS
  Release:        24.04
  Codename:       noble

  Package:
  passwd 1:4.13+dfsg1-4ubuntu3.2

  When using the libnss-extrausers package to store users in a seperate
  DB at /var/lib/extrausers, the usermod program is unable to edit group
  memberships (usermod -a -G <groupname> <username>)

  Running group-modifying usermod command fails silently, no error is
  generated and the return code is 0, but there is no change at
  /var/lib/extrausers

  usermod DOES support some extrausers features, I can successfully
  change a user's GECOS.

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