diff --git a/backport-CVE-2023-40546.patch b/backport-CVE-2023-40546.patch
new file mode 100644
index 0000000000000000000000000000000000000000..b7dfa7e058fc101427f30986fecfe78f82b21b6d
--- /dev/null
+++ b/backport-CVE-2023-40546.patch
@@ -0,0 +1,39 @@
+From 66e6579dbf921152f647a0c16da1d3b2f40861ca Mon Sep 17 00:00:00 2001
+From: Peter Jones <pjones@redhat.com>
+Date: Wed, 7 Jun 2023 13:15:49 -0400
+Subject: [PATCH] CVE-2023-40546 mok: fix LogError() invocation
+
+On some ARM platform, jlinton noticed that when we fail to set a
+variable (because it isn't supported at all, presumably), our error
+message has an extra argument that doesn't match the format string.
+
+This patch removes the extra argument.
+
+Resolves: CVE-2023-40546
+Signed-off-by: Peter Jones <pjones@redhat.com>
+---
+ mok.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/mok.c b/mok.c
+index be1eaa15..0ac34158 100644
+--- a/mok.c
++++ b/mok.c
+@@ -291,7 +291,7 @@ mirror_one_esl(CHAR16 *name, EFI_GUID *guid, UINT32 attrs,
+ 					 &var, &varsz);
+ 	if (EFI_ERROR(efi_status) || !var || !varsz) {
+ 		LogError(L"Couldn't allocate %lu bytes for mok variable \"%s\": %r\n",
+-			 varsz, var, efi_status);
++			 varsz, name, efi_status);
+ 		return efi_status;
+ 	}
+ 
+@@ -302,7 +302,7 @@ mirror_one_esl(CHAR16 *name, EFI_GUID *guid, UINT32 attrs,
+ 	FreePool(var);
+ 	if (EFI_ERROR(efi_status)) {
+ 		LogError(L"Couldn't create mok variable \"%s\": %r\n",
+-			 varsz, var, efi_status);
++			 name, efi_status);
+ 		return efi_status;
+ 	}
+ 
diff --git a/shim.spec b/shim.spec
index ccb65abfae6aa3918aaeb03483bc89ddacfb575c..c1741f6406533b7a68796bbf00e84784bdc29487 100644
--- a/shim.spec
+++ b/shim.spec
@@ -25,7 +25,7 @@
 
 Name:	   	   shim
 Version:	   15.6
-Release:	   12
+Release:	   13
 Summary:	   First-stage UEFI bootloader
 ExclusiveArch:     x86_64 aarch64
 License:	   BSD
@@ -56,6 +56,7 @@ Patch19:backport-make-update-EVP_F_EVP_DECRYPTDECRYPTUPDATE.patch
 Patch20:backport-CVE-2021-23840.patch
 Patch21:backport-CVE-2023-0464.patch
 Patch22:backport-CVE-2023-3817.patch
+Patch23:backport-CVE-2023-40546.patch
 
 # Feature for shim SMx support
 Patch9000:Feature-shim-openssl-add-ec-support.patch
@@ -177,6 +178,9 @@ make test
 /usr/src/debug/%{name}-%{version}-%{release}/*
 
 %changelog
+* Tue Nov 7 2023 jinlun <jinlun@huawei.com> - 15.6-13
+- fix CVE-2023-40546
+
 * Sat Oct 28 2023 luhuaxin <luhuaxin1@huawei.com> - 15.6-12
 - fix CVE-2023-0464 CVE-2023-3817