Public bug reported:

[ Impact ]

Fprintd 1.90.7 is a new upstream version of fprintd that addresses many issues 
that have been here for some years, including some security ones (such as bug 
#1532264).
It was also mostly rewritten to use GDBus and removing the deprecated dbus-glib.


[ Test Case ]

- Setup fingerprint authentication
- Ensure that:
  - Previously configured access is still working
  - Configuring fprintd from 0 works as expected

Enrollment and verification should both work using GNOME Control center
and GNOME Shell (or other setups in KDE or other DE's) and using the
`fprintd-enroll` / `fprintd-verify` / `fprintd-delete` utilities.


[ Regression potential ]

As said changes [1] are not trivial (even though you may want to ignore
white spaces, as per new syntax rules), however the fprintd test suite
already included quite a lot test cases and many others have been added
to this release to ensure that nothing changed.

>From a dbus-API point of view, there were no changes (just few additions
such as the DBus object manager support), so clients should expect no
changes.

However the new DBus and async polkit authentication machinery could cause 
regressions, such as:
 - Races causing wrong client to be authenticated on request
 - Concurrent requests could lead to other client to be authorized
 - PAM module could ignore verification events or authorize the wrong request


[1] 
https://launchpadlibrarian.net/510855552/fprintd_1.90.1-1ubuntu1_1.90.7-1.diff.gz

** Affects: fprintd (Ubuntu)
     Importance: High
     Assignee: Marco Trevisan (Treviño) (3v1n0)
         Status: In Progress

** Affects: fprintd (Ubuntu Focal)
     Importance: High
     Assignee: Marco Trevisan (Treviño) (3v1n0)
         Status: In Progress

** Affects: fprintd (Ubuntu Groovy)
     Importance: High
     Assignee: Marco Trevisan (Treviño) (3v1n0)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1908119

Title:
  SRU 1.90.7

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