c49c150dcf
ProcShmCreateSegment() sent the xShmCreateSegmentReply to the client without byte-swapping the sequenceNumber field for byte-swapped clients. Every other SHM Proc function that sends a reply (ProcShmQueryVersion, ProcShmGetImage) correctly swaps the reply fields. The sequenceNumber is a CARD16 that Xlib/XCB uses to match replies to their corresponding requests. With a garbled sequence number, the client library will mismatch the reply with the wrong request, causing the client to hang waiting for the real reply, process stale data from a different request's reply, or crash due to unexpected reply format. Fix by adding byte-swap of sequenceNumber and length before WriteToClient, consistent with the other SHM reply handlers. Co-Authored-by: Claude Code <noreply@anthropic.com> Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2181> |
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| test | ||
| Xext | ||
| xfixes | ||
| Xi | ||
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| COPYING | ||
| meson.build | ||
| meson_options.txt | ||
| README.md | ||
| SECURITY.md | ||
| xorg-server.m4 | ||
| xorg-server.pc.in | ||
| xserver.ent.in | ||
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: