This bug was fixed in the package gnome-shell - 46.0-0ubuntu6~24.04.6

---------------
gnome-shell (46.0-0ubuntu6~24.04.6) noble; urgency=medium

  [ Nathan Pratta Teodosio ]
  * d/p/chromium-snap-pwa.patch: Fixes tab and dock grouping of progressive
    web applications for the Chromium snap (LP: #2007652).

  [ Robert Malz ]
  * d/p: Fix default service discovery.
    Fix an issue where authentication service was not
    properly picked due to incorrect checks in _isDiscreteServiceEnabled
    (LP: #2065432)
  * Add loginDialog-Don-t-assume-this._user-is-always-defined.patch.
    Cherry-pick for e5d9a0fe
    Fixes null dereference during login with smart cards. (LP: #2065432)

  [ Marco Trevisan (Treviño) ]
  * debian/gbp.conf: Use upstream/46.x branch
  * d/p: unlockDialog: Also center the time in 12h format (LP: #2084276)
  * d/p: Exclude override-redirect windows from workspace animation
    (LP: #2039543)
  * d/p: Use absolute tray icon position in root event coordinates
    (LP: #2059819)
  * d/p: Fix password not re-asked for TCRYPT devices (LP: #2084281)
  * d/p: Keep locate pointer animation when animations are disabled
    (LP: #2039801)
  * d/p: Fix keyboard navigation in AppFolderDialog (LP: #2042763)
  * d/p: Fix connection to WPA Enterprise networks from quick settings
    (LP: #2084286)
  * d/p: Add user permissions to new wifi connections if has no system ones
    (LP: #2084287)
  * d/p: gdm: Actually wait for pending messages being notified on failures
    (LP: #2084289)
  * d/p: Fix themed icons rendering in notifications (LP: #2084301)
  * d/p: Fix notifications not showing in the lockscreen (LP: #2084302)
  * d/p: Allow to set a custom ShellUserVerifier (LP: #2084306)
  * d/p: Fix toggling lockscreen view using Escape (LP: #2084308, #2072716)
  * d/p: Make active workspace above siblings (LP: #2084310)
  * d/p: notificationDaemon: Use correct property name to enable markup
    (LP: #2084293)

 -- Marco Trevisan (Treviño) <[email protected]>  Thu, 05 Dec 2024
03:13:58 +0100

** Changed in: gnome-shell (Ubuntu Noble)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2084306

Title:
  Impossible to patch gnome shell to set a custom ShellUserVerifier

Status in gnome-shell package in Ubuntu:
  Fix Released
Status in gnome-shell source package in Noble:
  Fix Released

Bug description:
  [ Impact ]

  GNOME Shell in ubuntu is also used to show custom user verifiers in
  order to be able to login with specific authenticators, but since
  version 46 extensions providing this are not working anymore.

  This is due to the fact that it's not possible anymore to override the
  shell verifier from a GNOME extension.

  In particular, AWS's Amazon DCV requires an extension in order to login, and 
this does not work anymore in GNOME 46:
   - https://github.com/aws/dcv-gnome-shell-extension

  Without this extension, the shell native authenticator can't be
  bypassed in AWS installations when the web authentication has
  validated the user credentials.

  [ Test case ]

  To verify that the the function can be overridden, a new symbol has to
  be exported.

  Use the gnome shell looking glass (Alt+F2 -> 'lg' -> Enter) and paste
  this code:

  import('../gdm/authPrompt.js').then(m => Main.notify("Found",
  `${m.AuthPrompt.prototype._createUserVerifier ?? false}`))

  A notification should be shown with the function code, while it should
  not contain the word "false" only.

  This can also be verified installing the extension
  https://github.com/aws/dcv-gnome-shell-extension and it should load
  without errors in the journal

  [ Regression potential ]

  It's just a simple abstraction of few lines of code, so potential is
  very low, but potentially the GDM user verifier (and so the user list)
  may not be loaded.

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