diff -Nru linux-meta-lts-xenial-4.4.0.121.102/debian/changelog linux-meta-lts-xenial-4.4.0.123.103/debian/changelog
--- linux-meta-lts-xenial-4.4.0.121.102/debian/changelog	2018-04-15 03:58:24.000000000 +0000
+++ linux-meta-lts-xenial-4.4.0.123.103/debian/changelog	2018-04-25 11:22:11.000000000 +0000
@@ -1,3 +1,13 @@
+linux-meta-lts-xenial (4.4.0.123.103) trusty; urgency=medium
+
+  * Bump ABI 4.4.0-123
+
+  * need to ensure microcode updates are available to all bare-metal installs of
+    Ubuntu (LP: #1738259)
+    - Make kernel image packages depend on cpu microcode updates
+
+ -- Stefan Bader <stefan.bader@canonical.com>  Wed, 25 Apr 2018 13:22:11 +0200
+
 linux-meta-lts-xenial (4.4.0.121.102) trusty; urgency=medium
 
   * Bump ABI 4.4.0-121
diff -Nru linux-meta-lts-xenial-4.4.0.121.102/debian/control linux-meta-lts-xenial-4.4.0.123.103/debian/control
--- linux-meta-lts-xenial-4.4.0.121.102/debian/control	2018-04-15 04:11:16.000000000 +0000
+++ linux-meta-lts-xenial-4.4.0.123.103/debian/control	2018-04-25 11:23:24.000000000 +0000
@@ -43,7 +43,7 @@
 Architecture: i386 amd64 armhf arm64 ppc64el
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic [i386 amd64 ppc64el], linux-firmware
+Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic [i386 amd64 ppc64el], linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: Generic Linux kernel image
  This package will always depend on the latest generic kernel image
@@ -131,7 +131,7 @@
 Architecture: i386 amd64
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-lowlatency, linux-firmware
+Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-lowlatency, linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: lowlatency Linux kernel image
  This package will always depend on the latest lowlatency kernel image
@@ -329,7 +329,7 @@
 Architecture: amd64
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic, linux-firmware
+Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic, linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: Signed Generic Linux kernel image
  This package will always depend on the latest generic kernel image
@@ -349,7 +349,7 @@
 Architecture: amd64
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-lowlatency, linux-firmware
+Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-lowlatency, linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: Signed Generic Linux kernel image
  This package will always depend on the latest lowlatency kernel image
diff -Nru linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/generic linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/generic
--- linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/generic	2018-04-15 03:57:46.000000000 +0000
+++ linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/generic	2018-04-25 11:21:47.000000000 +0000
@@ -11,7 +11,7 @@
 Architecture: i386 amd64 armhf arm64 ppc64el
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic [i386 amd64 ppc64el], linux-firmware
+Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic [i386 amd64 ppc64el], linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: Generic Linux kernel image
  This package will always depend on the latest generic kernel image
diff -Nru linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/lowlatency linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/lowlatency
--- linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/lowlatency	2018-04-15 03:57:46.000000000 +0000
+++ linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/lowlatency	2018-04-25 11:21:47.000000000 +0000
@@ -11,7 +11,7 @@
 Architecture: i386 amd64
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-lowlatency, linux-firmware
+Depends: ${misc:Depends}, linux-image-${kernel-abi-version}-lowlatency, linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: lowlatency Linux kernel image
  This package will always depend on the latest lowlatency kernel image
diff -Nru linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/signed-generic linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/signed-generic
--- linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/signed-generic	2018-04-15 03:57:46.000000000 +0000
+++ linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/signed-generic	2018-04-25 11:21:47.000000000 +0000
@@ -2,7 +2,7 @@
 Architecture: amd64
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic, linux-firmware
+Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-generic, linux-image-extra-${kernel-abi-version}-generic, linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: Signed Generic Linux kernel image
  This package will always depend on the latest generic kernel image
diff -Nru linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/signed-lowlatency linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/signed-lowlatency
--- linux-meta-lts-xenial-4.4.0.121.102/debian/control.d/signed-lowlatency	2018-04-15 03:57:46.000000000 +0000
+++ linux-meta-lts-xenial-4.4.0.123.103/debian/control.d/signed-lowlatency	2018-04-25 11:21:47.000000000 +0000
@@ -2,7 +2,7 @@
 Architecture: amd64
 Section: kernel
 Priority: optional
-Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-lowlatency, linux-firmware
+Depends: ${misc:Depends}, linux-signed-image-${kernel-abi-version}-lowlatency, linux-firmware, intel-microcode [amd64 i386], amd64-microcode [amd64 i386]
 Recommends: thermald [i386 amd64]
 Description: Signed Generic Linux kernel image
  This package will always depend on the latest lowlatency kernel image