From 9f74df28a1a91b715489e87b8a34b596cb4ee5b6 Mon Sep 17 00:00:00 2001
From: Ali Erdinc Koroglu <aekoroglu@linux.intel.com>
Date: Oct 30 2023 08:19:45 +0000
Subject: Fix for CVE-2023-45853


---

diff --git a/SOURCES/zlib-1.2.13-Reject-overflows-of-zip-header-fields-in-minizip.patch b/SOURCES/zlib-1.2.13-Reject-overflows-of-zip-header-fields-in-minizip.patch
new file mode 100644
index 0000000..35e3073
--- /dev/null
+++ b/SOURCES/zlib-1.2.13-Reject-overflows-of-zip-header-fields-in-minizip.patch
@@ -0,0 +1,39 @@
+From 73331a6a0481067628f065ffe87bb1d8f787d10c Mon Sep 17 00:00:00 2001
+From: Hans Wennborg <hans@chromium.org>
+Date: Fri, 18 Aug 2023 11:05:33 +0200
+Subject: [PATCH] Reject overflows of zip header fields in minizip.
+
+This checks the lengths of the file name, extra field, and comment
+that would be put in the zip headers, and rejects them if they are
+too long. They are each limited to 65535 bytes in length by the zip
+format. This also avoids possible buffer overflows if the provided
+fields are too long.
+---
+ contrib/minizip/zip.c | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/contrib/minizip/zip.c b/contrib/minizip/zip.c
+index 3d3d4ca..0446109 100644
+--- a/contrib/minizip/zip.c
++++ b/contrib/minizip/zip.c
+@@ -1043,6 +1043,17 @@ extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file, const char* filename, c
+       return ZIP_PARAMERROR;
+ #endif
+ 
++    // The filename and comment length must fit in 16 bits.
++    if ((filename!=NULL) && (strlen(filename)>0xffff))
++        return ZIP_PARAMERROR;
++    if ((comment!=NULL) && (strlen(comment)>0xffff))
++        return ZIP_PARAMERROR;
++    // The extra field length must fit in 16 bits. If the member also requires
++    // a Zip64 extra block, that will also need to fit within that 16-bit
++    // length, but that will be checked for later.
++    if ((size_extrafield_local>0xffff) || (size_extrafield_global>0xffff))
++        return ZIP_PARAMERROR;
++
+     zi = (zip64_internal*)file;
+ 
+     if (zi->in_opened_file_inzip == 1)
+-- 
+2.41.0
+
diff --git a/SPECS/zlib.spec b/SPECS/zlib.spec
index d3cc5eb..ce5b047 100644
--- a/SPECS/zlib.spec
+++ b/SPECS/zlib.spec
@@ -3,7 +3,7 @@
 
 Name:    zlib
 Version: 1.2.11
-Release: 26%{?dist}
+Release: 27%{?dist}
 Summary: The compression and decompression library
 # /contrib/dotzlib/ have Boost license
 License: zlib and Boost
@@ -61,6 +61,9 @@ Patch21: zlib-1.2.11-covscan-issues.patch
 # Resolves: #2193045
 Patch22: zlib-1.2.11-IBM-Z-hw-accelrated-deflate-fix-crash-deflateBound.patch
 
+# Upstream patch: https://github.com/madler/zlib/commit/73331a6a0481067628f065ffe87bb1d8f787d10c
+Patch23: zlib-1.2.13-Reject-overflows-of-zip-header-fields-in-minizip.patch
+
 # SSE+AVX2 slide_hash optimization for x86_64 arch
 Patch100: zlib-1.2.11-x86_64-accelrated-slide-hash.patch
 
@@ -136,6 +139,7 @@ developing applications which use minizip.
 %patch20 -p1
 %patch21 -p1
 %patch22 -p1
+%patch23 -p1
 %ifarch x86_64
 %patch100 -p1
 %endif
@@ -222,6 +226,10 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
 
 
 %changelog
+* Tue Oct 24 2023 Lukas Javorsky <ljavorsk@redhat.com> - 1.2.11-27
+- Applied upstream commit 73331a6a0481067628f065ffe87bb1d8f787d10c
+- Fixes: CVE-2023-45853
+
 * Tue May 16 2023 Lukas Javorsky <ljavorsk@redhat.com> - 1.2.11-26
 - Fix the Crash in zlib deflateBound() function on s390x
 - Resolves: BZ#2193045