diff -Nru targetcli-fb-2.1.53/debian/changelog targetcli-fb-2.1.53/debian/changelog
--- targetcli-fb-2.1.53/debian/changelog	2024-05-25 10:20:10.000000000 +0200
+++ targetcli-fb-2.1.53/debian/changelog	2025-07-26 09:27:03.000000000 +0200
@@ -1,3 +1,12 @@
+targetcli-fb (1:2.1.53-1.3) unstable; urgency=medium
+
+  * Non-maintainer upload.
+
+  [Fiona Ebner]
+  * fix Python exception when creating LUNs with ACLs present (Closes: #1109887)
+
+ -- Fabian Grünbichler <debian@fabian.gruenbichler.email>  Sat, 26 Jul 2025 09:27:03 +0200
+
 targetcli-fb (1:2.1.53-1.2) unstable; urgency=medium
 
   * Non-maintainer upload.
diff -Nru targetcli-fb-2.1.53/debian/patches/fix-mapping-the-new-lun-to-the-node-acl.patch targetcli-fb-2.1.53/debian/patches/fix-mapping-the-new-lun-to-the-node-acl.patch
--- targetcli-fb-2.1.53/debian/patches/fix-mapping-the-new-lun-to-the-node-acl.patch	1970-01-01 01:00:00.000000000 +0100
+++ targetcli-fb-2.1.53/debian/patches/fix-mapping-the-new-lun-to-the-node-acl.patch	2025-07-26 09:27:03.000000000 +0200
@@ -0,0 +1,30 @@
+From: Maurizio Lombardi <mlombard@redhat.com>
+Date: Tue, 30 Jan 2024 13:03:08 +0100
+X-Dgit-Generated: 1:2.1.53-1.3 f08f99b5ffac3186a2f9162d6baf882662cf77ac
+Subject: Fix mapping the new LUN to the node ACL
+
+Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
+Bug-Debian: https://bugs.debian.org/1109887
+Origin: https://github.com/open-iscsi/targetcli-fb/commit/560993168d85ec7c84e9aacba5659aa17b40588c
+Last-Update: 2025-07-25
+
+---
+
+diff --git a/targetcli/ui_target.py b/targetcli/ui_target.py
+index 2c46765..65df61f 100644
+--- a/targetcli/ui_target.py
++++ b/targetcli/ui_target.py
+@@ -1151,10 +1151,9 @@ class UILUNs(UINode):
+                         possible_mlun += 1
+                     mapped_lun = possible_mlun
+ 
+-                else:
+-                    mlun = MappedLUN(acl, mapped_lun, lun_object, write_protect=False)
+-                    self.shell.log.info("Created LUN %d->%d mapping in node ACL %s"
+-                                        % (mlun.tpg_lun.lun, mlun.mapped_lun, acl.node_wwn))
++                mlun = MappedLUN(acl, mapped_lun, lun_object, write_protect=False)
++                self.shell.log.info("Created LUN %d->%d mapping in node ACL %s"
++                                    % (mlun.tpg_lun.lun, mlun.mapped_lun, acl.node_wwn))
+             self.parent.refresh()
+ 
+         return self.new_node(ui_lun)
diff -Nru targetcli-fb-2.1.53/debian/patches/series targetcli-fb-2.1.53/debian/patches/series
--- targetcli-fb-2.1.53/debian/patches/series	2021-01-11 17:50:17.000000000 +0100
+++ targetcli-fb-2.1.53/debian/patches/series	2025-07-26 09:27:03.000000000 +0200
@@ -1 +1,3 @@
 use-rtslib-fb-target-instead-of-etc-target.patch
+target-remove-the-reference-to-max_lun.patch
+fix-mapping-the-new-lun-to-the-node-acl.patch
diff -Nru targetcli-fb-2.1.53/debian/patches/target-remove-the-reference-to-max_lun.patch targetcli-fb-2.1.53/debian/patches/target-remove-the-reference-to-max_lun.patch
--- targetcli-fb-2.1.53/debian/patches/target-remove-the-reference-to-max_lun.patch	1970-01-01 01:00:00.000000000 +0100
+++ targetcli-fb-2.1.53/debian/patches/target-remove-the-reference-to-max_lun.patch	2025-07-26 09:27:03.000000000 +0200
@@ -0,0 +1,41 @@
+From: Maurizio Lombardi <mlombard@redhat.com>
+Date: Thu, 19 Oct 2023 14:15:54 +0200
+X-Dgit-Generated: 1:2.1.53-1.3 ae9718771e0894b5cb3d6f17e9109b44e364d0c8
+Subject: target: remove the reference to MAX_LUN
+
+The MappedLUN.MAX_LUN symbol has been removed from rtslib.
+Remove the reference to it.
+
+Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
+Bug-Debian: https://bugs.debian.org/1109887
+Origin: https://github.com/open-iscsi/targetcli-fb/commit/4424eba4ba9f5c66c0cd8691fd4aad87ee19640f
+Last-Update: 2025-07-25
+
+---
+
+diff --git a/targetcli/ui_target.py b/targetcli/ui_target.py
+index e8ba6c6..2c46765 100644
+--- a/targetcli/ui_target.py
++++ b/targetcli/ui_target.py
+@@ -1146,16 +1146,11 @@ class UILUNs(UINode):
+                     mapped_lun = 0
+                 existing_mluns = [mlun.mapped_lun for mlun in acl.mapped_luns]
+                 if mapped_lun in existing_mluns:
+-                    mapped_lun = None
+-                    for possible_mlun in six.moves.range(MappedLUN.MAX_LUN):
+-                        if possible_mlun not in existing_mluns:
+-                            mapped_lun = possible_mlun
+-                            break
+-
+-                if mapped_lun == None:
+-                    self.shell.log.warning(
+-                        "Cannot map new lun %s into ACL %s"
+-                        % (lun_object.lun, acl.node_wwn))
++                    possible_mlun = 0
++                    while possible_mlun in existing_mluns:
++                        possible_mlun += 1
++                    mapped_lun = possible_mlun
++
+                 else:
+                     mlun = MappedLUN(acl, mapped_lun, lun_object, write_protect=False)
+                     self.shell.log.info("Created LUN %d->%d mapping in node ACL %s"