diff -Nru livecd-rootfs-2.525.8/debian/changelog livecd-rootfs-2.525.9/debian/changelog
--- livecd-rootfs-2.525.8/debian/changelog	2018-08-28 01:03:37.000000000 +0200
+++ livecd-rootfs-2.525.9/debian/changelog	2018-09-20 09:30:34.000000000 +0200
@@ -1,3 +1,10 @@
+livecd-rootfs (2.525.9) bionic; urgency=medium
+
+  * Ensure /lib/modules exists in root tarballs and sqashfs.
+    (LP: #1792905)
+
+ -- Tobias Koch <tobias.koch@canonical.com>  Thu, 20 Sep 2018 09:30:34 +0200
+
 livecd-rootfs (2.525.8) bionic; urgency=medium
 
   * Disentangle enabling universe in the final image a little from having
diff -Nru livecd-rootfs-2.525.8/live-build/ubuntu-cpc/hooks/031-0-create-root-dir.binary livecd-rootfs-2.525.9/live-build/ubuntu-cpc/hooks/031-0-create-root-dir.binary
--- livecd-rootfs-2.525.8/live-build/ubuntu-cpc/hooks/031-0-create-root-dir.binary	2018-08-15 12:06:39.000000000 +0200
+++ livecd-rootfs-2.525.9/live-build/ubuntu-cpc/hooks/031-0-create-root-dir.binary	2018-09-20 09:30:34.000000000 +0200
@@ -21,6 +21,9 @@
 env DEBIAN_FRONTEND=noninteractive chroot $rootfs_dir apt-get autoremove --purge --assume-yes
 rm -rf $rootfs_dir/boot/grub
 
+# Keep this as some derivatives mount a tempfs here
+mkdir -p $rootfs_dir/lib/modules
+
 teardown_mountpoint $rootfs_dir
 
 dpkg-query --admindir=$rootfs_dir/var/lib/dpkg -W > $rootfs_dir.manifest