From Debian package 0.0.20080702-1
In russell-20080929.diff
In Manoj's topic-debadim branch
In Russell's 2010-07-08 patch

Allow dpkg to use apt fds

Came from 365_apt_fixes
Merged upstream, but left redundantly in Debian package

Index: policy/modules/admin/dpkg.te
===================================================================
--- policy/modules/admin/dpkg.te.orig
+++ policy/modules/admin/dpkg.te
@@ -67,6 +67,10 @@
 allow dpkg_t self:msg { send receive };
 allow dpkg_t self:passwd { chfn rootok };
 
+# This is for se_aptitude et al, so that maintainer scripts can talk back.
+apt_use_fds(dpkg_script_t)
+apt_rw_pipes(dpkg_script_t)
+
 allow dpkg_t dpkg_lock_t:file manage_file_perms;
 
 manage_dirs_pattern(dpkg_t, dpkg_tmp_t, dpkg_tmp_t)