a5f439dcd2
The EGLStream backend keeps a queue of pending streams for each Xwayland window. However, when this pending queue is freed, the corresponding private data may not be cleared (typically if the pixmap for this window has changed before the compositor finished attaching the consumer for the window's pixmap's original eglstream), leading to a use-after-free and a crash when trying to use that data as the window pixmap. Make sure to clear the private data when the pending stream is freed. Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1055 Signed-off-by: Olivier Fourdan <ofourdan@redhat.com> Tested-by: Karol Szuster <karolsz9898@gmail.com> Reviewed-by: Adam Jackson <ajax@redhat.com>
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the Xorg mailing list:
https://lists.freedesktop.org/mailman/listinfo/xorg
The primary development code repository can be found at:
https://gitlab.freedesktop.org/xorg/xserver
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches
As with other projects hosted on freedesktop.org, X.Org follows its Code of Conduct, based on the Contributor Covenant. Please conduct yourself in a respectful and civilized manner when using the above mailing lists, bug trackers, etc: