fix CVE-2023-38559

(cherry picked from commit 6c1944605519610bced2023539925fa0210da104)

CVE-2023-38559.patch

@@ -0,0 +1,27 @@
+From d81b82c70bc1fb9991bb95f1201abb5dea55f57f Mon Sep 17 00:00:00 2001
+From: Chris Liddell <chris.liddell@artifex.com>
+Date: Mon, 17 Jul 2023 14:06:37 +0100
+Subject: [PATCH] Bug 706897: Copy pcx buffer overrun fix from
+ devices/gdevpcx.c
+
+Bounds check the buffer, before dereferencing the pointer.
+---
+ base/gdevdevn.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/base/gdevdevn.c b/base/gdevdevn.c
+index 7b14d9c71..6351fb77a 100644
+--- a/base/gdevdevn.c
++++ b/base/gdevdevn.c
+@@ -1983,7 +1983,7 @@ devn_pcx_write_rle(const byte * from, const byte * end, int step, gp_file * file
+         byte data = *from;
+ 
+         from += step;
+-        if (data != *from || from == end) {
++        if (from >= end || data != *from) {
+             if (data >= 0xc0)
+                 gp_fputc(0xc1, file);
+         } else {
+-- 
+2.41.0.windows.3
+

ghostscript.spec

@@ -9,7 +9,7 @@
 
 Name:             ghostscript
 Version:          9.55.0
-Release:          2
+Release:          3
 Summary:          An interpreter for PostScript and PDF files
 License:          AGPLv3+
 URL:              https://ghostscript.com/
@@ -18,6 +18,7 @@ Source0:          https://github.com/ArtifexSoftware/ghostpdl-downloads/releases
 Patch0:  ghostscript-9.23-100-run-dvipdf-securely.patch
 Patch1:  backport-Bug-704405-Fix-typo-in-non-forked-lcms2-code.patch
 Patch2:  backport-CVE-2022-2085.patch
+Patch3:  CVE-2023-38559.patch
 
 BuildRequires:    automake gcc
 BuildRequires:    adobe-mappings-cmap-devel adobe-mappings-pdf-devel
@@ -178,6 +179,9 @@ install -m 0755 -d %{buildroot}%{_datadir}/%{name}/conf.d/
 %{_bindir}/dvipdf
 
 %changelog
+* Tue Aug 15 2023 liningjie <liningjie@xfusion.com> - 9.55.0-3
+- fix CVE-2023-38559
+
 * Tue Jul 5 2022 panxiaohe <panxh.life@foxmail.com> - 9.55.0-2
 - fix CVE-2022-2085