diff -Nru gcc-12-cross-ports-13ubuntu1/debian/changelog gcc-12-cross-ports-13ubuntu1.1/debian/changelog
--- gcc-12-cross-ports-13ubuntu1/debian/changelog	2023-02-17 06:37:06.000000000 +0000
+++ gcc-12-cross-ports-13ubuntu1.1/debian/changelog	2023-05-15 09:59:32.000000000 +0000
@@ -1,3 +1,9 @@
+gcc-12-cross-ports (13ubuntu1.1) lunar-proposed; urgency=medium
+
+  * SRU: LP: #1995499: Backport GCC 12.3.0 to Ubuntu 23.04.
+
+ -- Matthias Klose <doko@ubuntu.com>  Mon, 15 May 2023 11:59:32 +0200
+
 gcc-12-cross-ports (13ubuntu1) lunar; urgency=medium
 
   * Stop building packages built by gcc-13-cross-ports.
diff -Nru gcc-12-cross-ports-13ubuntu1/debian/control gcc-12-cross-ports-13ubuntu1.1/debian/control
--- gcc-12-cross-ports-13ubuntu1/debian/control	2023-02-17 06:37:06.000000000 +0000
+++ gcc-12-cross-ports-13ubuntu1.1/debian/control	2023-05-15 09:59:32.000000000 +0000
@@ -4,8 +4,8 @@
 Maintainer: Debian GCC Maintainers <debian-gcc@lists.debian.org>
 Uploaders: Matthias Klose <doko@debian.org>
 Standards-Version: 4.6.2
-Build-Depends: gcc-12-source (>= 12.2.0-14~),
-  gcc-12-base (>= 12.2.0-14~),
+Build-Depends: gcc-12-source (>= 12.3.0-1~),
+  gcc-12-base (>= 12.3.0-1~),
   binutils-multiarch (>= 2.39-6),
   autoconf2.69, bison (>= 1:2.3),
   chrpath, debhelper (>= 9), dpkg-dev (>= 1.21.17), flex, gawk, gettext,
diff -Nru gcc-12-cross-ports-13ubuntu1/debian/rules gcc-12-cross-ports-13ubuntu1.1/debian/rules
--- gcc-12-cross-ports-13ubuntu1/debian/rules	2023-02-17 06:37:06.000000000 +0000
+++ gcc-12-cross-ports-13ubuntu1.1/debian/rules	2023-05-15 09:59:32.000000000 +0000
@@ -15,8 +15,8 @@
 GCC_VER := $(shell dpkg-parsechangelog |egrep ^Source:|cut -f2 -d' '|cut -f2 -d'-')
 
 ifeq ($(GCC_VER),12)
-  MIN_VER_GCC      := 12.2.0-14~
-  PPA_VER_GCC      := 12.2.0-14~
+  MIN_VER_GCC      := 12.3.0-1~
+  PPA_VER_GCC      := 12.3.0-1~
 endif
 
 ifndef MIN_VER_GCC