Apply a patch that fixes rhbz#2307237

Resolves: rhbz#2307237

1773.patch

@@ -0,0 +1,26 @@
+From af013cf65867e3589f6da714eefc69d9f986bb91 Mon Sep 17 00:00:00 2001
+From: Nathan Moinvaziri <nathan@nathanm.com>
+Date: Mon, 9 Sep 2024 13:32:33 -0700
+Subject: [PATCH] Don't use chunkunroll for inflateBack
+
+If the output buffer and the window buffer are the same
+memory allocation, we cannot make the assumptions that chunkunroll
+does, that it is okay to overwrite the output buffer.
+---
+ inffast_tpl.h | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/inffast_tpl.h b/inffast_tpl.h
+index 9ddd187d84..c8f4786754 100644
+--- a/inffast_tpl.h
++++ b/inffast_tpl.h
+@@ -249,7 +249,8 @@ void Z_INTERNAL INFLATE_FAST(PREFIX3(stream) *strm, uint32_t start) {
+                     if (op < len) {             /* still need some from output */
+                         len -= op;
+                         out = chunkcopy_safe(out, from, op, safe);
+-                        out = CHUNKUNROLL(out, &dist, &len);
++                        if (!extra_safe)
++                            out = CHUNKUNROLL(out, &dist, &len);
+                         out = chunkcopy_safe(out, out - dist, len, safe);
+                     } else {
+                         out = chunkcopy_safe(out, from, len, safe);

zlib-ng.spec

@@ -19,13 +19,16 @@
 
 Name:		zlib-ng
 Version:	2.1.7
-Release:	2%{?dist}
+Release:	3%{?dist}
 Summary:	Zlib replacement with optimizations
 License:	Zlib
 Url:		https://github.com/zlib-ng/zlib-ng
 Source0:	https://github.com/zlib-ng/zlib-ng/archive/%{version}/%{name}-%{version}.tar.gz
 
 Patch:		far.diff
+# Backport from https://github.com/zlib-ng/zlib-ng/pull/1773
+# Fixes https://bugzilla.redhat.com/show_bug.cgi?id=2307237
+Patch:		1773.patch
 
 BuildRequires:	cmake >= 3.1
 BuildRequires:	gcc-c++
@@ -215,6 +218,9 @@ CHOST=%{target_cpu}-%{cpu_vendor}-linux-gnu sh test/abicheck.sh --zlib-compat
 
 
 %changelog
+* Tue Sep 10 2024 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 2.1.7-3
+- Fixes rhbz#2307237
+
 * Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 2.1.7-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild