diff -Nru live-build-3.0~a57/debian/changelog live-build-3.0~a57/debian/changelog
--- live-build-3.0~a57/debian/changelog	2017-10-02 23:57:51.000000000 +0000
+++ live-build-3.0~a57/debian/changelog	2018-06-26 22:36:32.000000000 +0000
@@ -1,3 +1,10 @@
+live-build (3.0~a57-1ubuntu25.6) xenial; urgency=medium
+
+  * ubuntu-initramfs-handling.patch: Use initramfs-tools to work with initrds,
+    instead of trying to naively repack and unpack them blindly (LP: #1778811)
+
+ -- Adam Conrad <adconrad@ubuntu.com>  Tue, 26 Jun 2018 16:36:32 -0600
+
 live-build (3.0~a57-1ubuntu25.5) xenial; urgency=medium
 
   [ Balint Reczey ]
diff -Nru live-build-3.0~a57/debian/patches/series live-build-3.0~a57/debian/patches/series
--- live-build-3.0~a57/debian/patches/series	2017-10-02 23:57:19.000000000 +0000
+++ live-build-3.0~a57/debian/patches/series	2018-06-26 22:36:32.000000000 +0000
@@ -34,3 +34,4 @@
 ubuntu-initramfs-compression-symlinks.patch
 ubuntu-debootstrap-demotions.patch
 skip-missing-initrd.patch
+ubuntu-initramfs-handling.patch
diff -Nru live-build-3.0~a57/debian/patches/ubuntu-initramfs-handling.patch live-build-3.0~a57/debian/patches/ubuntu-initramfs-handling.patch
--- live-build-3.0~a57/debian/patches/ubuntu-initramfs-handling.patch	1970-01-01 00:00:00.000000000 +0000
+++ live-build-3.0~a57/debian/patches/ubuntu-initramfs-handling.patch	2018-06-26 22:36:32.000000000 +0000
@@ -0,0 +1,75 @@
+Description: Use initramfs-tools to work with initrds instead of being silly.
+  Note that the lb_binary_disk portion of this is not a backport of the code
+  in bionic and cosmic, as initramfs-tools there does not have unmkinitramfs,
+  so we instead just guard against failing if we can't read the initrd.
+Author: Adam Conrad <adconrad@ubuntu.com>
+Bug-Ubuntu: https://bugs.launchpad.net/bugs/1778811
+Last-Update: 2018-06-26
+
+--- live-build-3.0~a57.orig/scripts/build/lb_binary_disk
++++ live-build-3.0~a57/scripts/build/lb_binary_disk
+@@ -100,15 +100,21 @@ case "${LB_INITRAMFS}" in
+ 
+ 			case "${LB_INITRAMFS_COMPRESSION}" in
+ 				gzip)
++					if zcat -t "../../${INITRD}" >/dev/null 2>&1; then
+ 					zcat "../../${INITRD}" | cpio --quiet -id conf/uuid.conf
++					fi
+ 					;;
+ 
+ 				bzip2)
++					if bzip2 -t "$archive" >/dev/null 2>&1; then
+ 					bzcat "../../${INITRD}" | cpio --quiet -id conf/uuid.conf
++					fi
+ 					;;
+ 
+ 				lzma)
+-					lzcat -S "" "../../${INITRD}" | cpio --quiet -id conf/uuid.conf
++					if lzcat -t "$archive" >/dev/null 2>&1; then
++					lzcat "../../${INITRD}" | cpio --quiet -id conf/uuid.conf
++					fi
+ 					;;
+ 			esac
+ 
+--- live-build-3.0~a57.orig/scripts/build/lb_chroot_hacks
++++ live-build-3.0~a57/scripts/build/lb_chroot_hacks
+@@ -184,34 +184,14 @@ esac
+ 
+ if [ "${LB_INITRAMFS}" != "none" ]
+ then
++	if [ -n "${LB_INITRAMFS_COMPRESSION}" ]; then
++		echo "COMPRESS=${LB_INITRAMFS_COMPRESSION}" \
++			> chroot/etc/initramfs-tools/conf.d/live-build.conf
++	fi
+ 	Chroot chroot "${UPDATE_INITRAMFS_OPTIONS} update-initramfs -k all -t -u"
++	rm -f chroot//etc/initramfs-tools/conf.d/live-build.conf
+ fi
+ 
+-# We probably ought to use COMPRESS= in a temporary file in
+-# /etc/initramfs-tools/conf.d/ instead, but it's hard to pass options that
+-# way.
+-case "${LB_INITRAMFS_COMPRESSION}" in
+-	gzip)
+-		;;
+-
+-	bzip2)
+-		for INITRAMFS in $(find chroot/boot -name 'initrd*' -not -type l); do
+-			zcat "${INITRAMFS}" | bzip2 -c ${BZIP2_OPTIONS} > "${INITRAMFS}.new"
+-			mv "${INITRAMFS}.new" "${INITRAMFS}"
+-		done
+-		;;
+-
+-	lzma)
+-		# We probably ought to use COMPRESS= in a temporary file in
+-		# /etc/initramfs-tools/conf.d/ instead, but it's hard to
+-		# pass options that way.
+-		for INITRAMFS in $(find chroot/boot -name 'initrd*' -not -type l); do
+-			zcat "${INITRAMFS}" | lzma -c ${LZMA_OPTIONS} > "${INITRAMFS}.new"
+-			mv "${INITRAMFS}.new" "${INITRAMFS}"
+-		done
+-		;;
+-esac
+-
+ # Ensure readable permissions on initramfs. loop-aes-utils sets umask to
+ # protect GPG keys, which live-build does not support.
+ # Note: Use find rather than chmod on the wildcard, one never knows what