diff -Nru glibc-2.27/debian/changelog glibc-2.27/debian/changelog
--- glibc-2.27/debian/changelog	2022-01-24 12:53:44.000000000 +0000
+++ glibc-2.27/debian/changelog	2022-05-03 10:19:39.000000000 +0000
@@ -1,3 +1,14 @@
+glibc (2.27-3ubuntu1.6) bionic; urgency=medium
+
+  [ Gunnar Hjalmarsson ]
+  * d/local/usr_sbin/update-locale: improve sanity checks. (LP: #1892825)
+
+  [ Aurelien Jarno ]
+  * debian/debhelper.in/libc.preinst: drop the check for kernel release
+    > 255 now that glibc and preinstall script are fixed. (LP: #1962225)
+
+ -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Tue, 03 May 2022 22:19:39 +1200
+
 glibc (2.27-3ubuntu1.5) bionic-security; urgency=medium
 
   * SECURITY UPDATE: infinite loop in iconv
diff -Nru glibc-2.27/debian/debhelper.in/libc.preinst glibc-2.27/debian/debhelper.in/libc.preinst
--- glibc-2.27/debian/debhelper.in/libc.preinst	2020-12-07 16:38:09.000000000 +0000
+++ glibc-2.27/debian/debhelper.in/libc.preinst	2022-05-03 04:29:09.000000000 +0000
@@ -126,21 +126,6 @@
     system=`uname -s`
     if [ "$system" = "Linux" ]
     then
-        # Test to make sure z < 255, in x.y.z-n form of kernel version
-        # Also make sure we don't trip on x.y.zFOO-n form
-        kernel_rev=$(uname -r | sed 's/\([0-9]*\.\)\{1,2\}\([0-9]*\)\(.*\)/\2/')
-        if [ "$kernel_rev" -ge 255 ]
-        then
-            echo "ERROR: Your kernel version indicates a revision number"
-            echo "of 255 or greater.  Glibc has a number of built in"
-            echo "assumptions that this revision number is less than 255."
-            echo "If you\'ve built your own kernel, please make sure that any"
-            echo "custom version numbers are appended to the upstream"
-            echo "kernel number with a dash or some other delimiter."
-            echo
-            exit 1
-        fi
-
         # sanity checking for the appropriate kernel on each architecture.
         kernel_ver=`uname -r`
         case ${DPKG_MAINTSCRIPT_ARCH:-$(dpkg --print-architecture)} in
diff -Nru glibc-2.27/debian/gbp.conf glibc-2.27/debian/gbp.conf
--- glibc-2.27/debian/gbp.conf	2020-12-07 16:38:09.000000000 +0000
+++ glibc-2.27/debian/gbp.conf	2022-05-03 04:27:35.000000000 +0000
@@ -1,3 +1,5 @@
-[buildpackage]
+[DEFAULT]
 pristine-tar = False
 overlay = True
+debian-tag = ubuntu/%(version)s
+debian-tag-msg= %(pkg)s Ubuntu release %(version)s
diff -Nru glibc-2.27/debian/local/usr_sbin/update-locale glibc-2.27/debian/local/usr_sbin/update-locale
--- glibc-2.27/debian/local/usr_sbin/update-locale	2020-12-07 16:38:09.000000000 +0000
+++ glibc-2.27/debian/local/usr_sbin/update-locale	2022-05-03 04:27:41.000000000 +0000
@@ -64,7 +64,7 @@
 }
 for (@ARGV)
 {
-	if (m/(.*?)=(.*)/)
+	if (m/(\w+)=(.*)/)
 	{
 		$arg{$1} = $2;
 	}