This bug was fixed in the package mutter - 46.2-1ubuntu0.24.04.7
---------------
mutter (46.2-1ubuntu0.24.04.7) noble; urgency=medium
[ Alessandro Astone ]
* Backport patches to fix crash when closing apps with subsurfaces
(LP: #2093237)
* Backport patches to fix drag&drop from X11 to Wayland windows
(LP: #2097415)
* Backport patches to fix possibly out of sync selection (LP: #2085634)
* Backport patches to fix handling of pixel formats with no alpha, which
fixes rendering of dialogs in IntelliJ IDEA. (LP: #2099879)
-- Daniel van Vugt <daniel.van.v...@canonical.com> Wed, 19 Mar 2025
16:59:59 +0800
** Changed in: mutter (Ubuntu Noble)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2093237
Title:
gnome-shell crashed with SIGSEGV in meta_window_foreach_transient()
from meta_window_has_modals() from repick_for_event() from
meta_wayland_pointer_update() from meta_wayland_seat_update()
Status in GNOME Shell:
Fix Released
Status in mutter package in Ubuntu:
Fix Released
Status in mutter source package in Noble:
Fix Released
Bug description:
[ Impact ]
* gnome-shell may crash and log-out the user when closing a Wayland
window that uses subsurfaces.
* The crash is specific to certain applications and requires a
specific event sequence to trigger, which makes it hard to reproduce.
[ Test Plan ]
1. sudo apt install libsdl2-dev
2. wget
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2093237/+attachment/5853638/+files/sdl2-reproducer.c
3. gcc sdl2-reproducer.c $(pkg-config --cflags --libs sdl2) -o
sdl2-reproducer
4. SDL_VIDEODRIVER=wayland ./sdl2-reproducer
5. Verify that a black window with a titlebar has opened
6. Close the window by clicking on the X button
7. Verify that the desktop did not crash and did not log you out.
[ Where problems could occur ]
* gnome-shell provides the GNOME desktop, and thus is a critical
component.
* A bug in the patch could manifest with applications not receiving
mouse inputs correctly, or with the desktop crashing and logging the
user out.
[ Other Info ]
The Ubuntu Error Tracker has been receiving reports about a problem regarding
gnome-shell. This problem was most recently seen with package version
46.3.1-2, the problem page at
https://errors.ubuntu.com/problem/3a784898b44dea37ee80596a3e9bc6caaef92b4c
contains more details, including versions of packages affected, stacktrace or
traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software
developer, you can request it at http://forms.canonical.com/reports/.
To manage notifications about this bug go to:
https://bugs.launchpad.net/gnome-shell/+bug/2093237/+subscriptions
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