/etc/apparmor.d/abstractions/dconf is in apparmor 2.12-4ubuntu5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | # vim:syntax=apparmor
# permissions for querying dconf settings; granting write access should
# be specified in a specific application's profile.
/etc/dconf/** r,
owner /{,var/}run/user/*/dconf/user r,
owner @{HOME}/.config/dconf/user r,
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