diff --git a/ghostscript-9.56.1-use-proper-bounds-check-for-subfunctions-of.patch b/ghostscript-9.56.1-use-proper-bounds-check-for-subfunctions-of.patch
new file mode 100644
index 0000000..8d3e700
--- /dev/null
+++ b/ghostscript-9.56.1-use-proper-bounds-check-for-subfunctions-of.patch
@@ -0,0 +1,76 @@
+From 61ee992bf2e132da2168754f587fcf163a68eb12 Mon Sep 17 00:00:00 2001
+Message-Id: <61ee992bf2e132da2168754f587fcf163a68eb12.1666169658.git.mjg@fedoraproject.org>
+From: Ken Sharp <ken.sharp@artifex.com>
+Date: Thu, 19 May 2022 16:59:05 +0100
+Subject: [PATCH] GhostPDF - use proper bounds check for subfunctions of type 3
+
+Bug #705225 "Gradients not rendered with the new PDF interpreter"
+
+The files in question have some remarkably complicated functions used
+to define a shading. One has a type 3 stitching function with 33 type 2
+subfunctions, to define basically a blue fill....
+
+The Domain of the shading is, additionally, unusual ranging from
+negative to positive instead of the more usual 0 to N for the parametric
+variable.
+
+The problem is that we were comparing the Domain of each subfunction
+against the Domain of the shading function, when in fact each sub
+function uses the relevant Encode parameter of the type 3 function
+and it is this that we should be checking against the Domain of the sub
+function.
+---
+ pdf/pdf_func.c | 25 +++++++++++++------------
+ 1 file changed, 13 insertions(+), 12 deletions(-)
+
+diff --git a/pdf/pdf_func.c b/pdf/pdf_func.c
+index 9537152ed..6e2d4e4e9 100644
+--- a/pdf/pdf_func.c
++++ b/pdf/pdf_func.c
+@@ -560,6 +560,18 @@ pdfi_build_function_3(pdf_context *ctx, gs_function_params_t * mnDR,
+ 
+     params.Functions = (const gs_function_t * const *)ptr;
+ 
++    code = pdfi_make_float_array_from_dict(ctx, (float **)&params.Bounds, function_dict, "Bounds");
++    if (code < 0)
++        goto function_3_error;
++
++    code = pdfi_make_float_array_from_dict(ctx, (float **)&params.Encode, function_dict, "Encode");
++    if (code < 0)
++        goto function_3_error;
++
++    if (code != 2 * params.k)
++        goto function_3_error;
++    code = 0;
++
+     for (i = 0; i < params.k; ++i) {
+         pdf_obj * rsubfn = NULL;
+ 
+@@ -578,23 +590,12 @@ pdfi_build_function_3(pdf_context *ctx, gs_function_params_t * mnDR,
+         if (code < 0)
+             goto function_3_error;
+ 
+-        code = pdfi_build_sub_function(ctx, &ptr[i], shading_domain, num_inputs, rsubfn, page_dict);
++        code = pdfi_build_sub_function(ctx, &ptr[i], &params.Encode[i * 2], num_inputs, rsubfn, page_dict);
+         pdfi_countdown(rsubfn);
+         if (code < 0)
+             goto function_3_error;
+     }
+ 
+-    code = pdfi_make_float_array_from_dict(ctx, (float **)&params.Bounds, function_dict, "Bounds");
+-    if (code < 0)
+-        goto function_3_error;
+-
+-    code = pdfi_make_float_array_from_dict(ctx, (float **)&params.Encode, function_dict, "Encode");
+-    if (code < 0)
+-        goto function_3_error;
+-
+-    if (code != 2 * params.k)
+-        goto function_3_error;
+-
+     if (params.Range == 0)
+         params.n = params.Functions[0]->params.n;
+ 
+-- 
+2.38.0.124.g8fc341881c
+
diff --git a/ghostscript.spec b/ghostscript.spec
index e1e1918..f5a62ea 100644
--- a/ghostscript.spec
+++ b/ghostscript.spec
@@ -45,7 +45,7 @@
 Name:             ghostscript
 Summary:          Interpreter for PostScript language & PDF
 Version:          9.56.1
-Release:          3%{?dist}
+Release:          4%{?dist}
 
 License:          AGPLv3+
 
@@ -105,6 +105,7 @@ BuildRequires:    make
 #Patch000: example000.patch
 Patch000: ghostscript-9.56-fix-PDFFitPage-with-square-MediaBox.patch
 Patch001: ghostscript-9.56.1-Fix-color-info-juggling-with-x11-devices.patch
+Patch002: ghostscript-9.56.1-use-proper-bounds-check-for-subfunctions-of.patch
 
 # Downstream patches -- these should be always included when doing rebase:
 # ------------------
@@ -435,6 +436,9 @@ done
 # =============================================================================
 
 %changelog
+* Wed Oct 19 2022 Michael J Gruber <mjg@fedoraproject.org> - 9.56.1-4
+- fix specifix shading subfunction handling
+
 * Wed Oct 05 2022 Michael J Gruber <mjg@fedoraproject.org> - 9.56.1-3
 - fix segfaulting X11 devices (rhbz#2125654)