Backport !4053 “gdbusconnection: Allow name owners to have the syntax of a well-known name” to glib-2-80 (!4055) · Merge requests · GNOME / GLib

Philip Withnall requested to merge pwithnall/glib:backport-4053-ibus-name-glib-2-80 into glib-2-80 May 08, 2024

In a D-Bus-Specification-compliant message bus, the owner of a well-known name is a unique name. However, ibus has its own small implementation of a message bus (src/ibusbus.c) in which org.freedesktop.IBus is special-cased to also have itself as its owner (like org.freedesktop.DBus on a standard message bus), and connects to that bus with the G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION flag. The ability to do this regressed when CVE-2024-34397 was fixed.

Relax the checks to allow the owner of a well-known name to be any valid D-Bus name, even if it is not syntactically a unique name.

Fixes: 683b14b9 "gdbus: Track name owners for signal subscriptions" Resolves: #3353 (closed) Bug-Debian: https://bugs.debian.org/1070730 Bug-Debian: https://bugs.debian.org/1070736 Bug-Debian: https://bugs.debian.org/1070743 Bug-Debian: https://bugs.debian.org/1070745 Signed-off-by: Simon McVittie smcv@debian.org

Trivial backport of !4053 (merged) to glib-2-80.

Backport !4053 “gdbusconnection: Allow name owners to have the syntax of a well-known name” to glib-2-80

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