fix CVE-2022-37434

backport-0001-CVE-2022-37434.patch

@@ -0,0 +1,35 @@
+From eff308af425b67093bab25f80f1ae950166bece1 Mon Sep 17 00:00:00 2001
+From: Mark Adler <fork@madler.net>
+Date: Sat, 30 Jul 2022 15:51:11 -0700
+Subject: [PATCH] Fix a bug when getting a gzip header extra field with
+ inflate().
+
+If the extra field was larger than the space the user provided with
+inflateGetHeader(), and if multiple calls of inflate() delivered
+the extra header data, then there could be a buffer overflow of the
+provided space. This commit assures that provided space is not
+exceeded.
+---
+ inflate.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/inflate.c b/inflate.c
+index ac333e8..d758a1c 100644
+--- a/inflate.c
++++ b/inflate.c
+@@ -758,9 +758,10 @@ int flush;
+                 copy = state->length;
+                 if (copy > have) copy = have;
+                 if (copy) {
++                    len = state->head->extra_len - state->length;
+                     if (state->head != Z_NULL &&
+-                        state->head->extra != Z_NULL) {
+-                        len = state->head->extra_len - state->length;
++                        state->head->extra != Z_NULL &&
++                        len < state->head->extra_max) {
+                         zmemcpy(state->head->extra + len, next,
+                                 len + copy > state->head->extra_max ?
+                                 state->head->extra_max - len : copy);
+-- 
+2.27.0
+

backport-0002-CVE-2022-37434.patch

@@ -0,0 +1,32 @@
+From 1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d Mon Sep 17 00:00:00 2001
+From: Mark Adler <fork@madler.net>
+Date: Mon, 8 Aug 2022 10:50:09 -0700
+Subject: [PATCH] Fix extra field processing bug that dereferences NULL
+ state->head.
+
+The recent commit to fix a gzip header extra field processing bug
+introduced the new bug fixed here.
+---
+ inflate.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/inflate.c b/inflate.c
+index d758a1c..cd01857 100644
+--- a/inflate.c
++++ b/inflate.c
+@@ -758,10 +758,10 @@ int flush;
+                 copy = state->length;
+                 if (copy > have) copy = have;
+                 if (copy) {
+-                    len = state->head->extra_len - state->length;
+                     if (state->head != Z_NULL &&
+                         state->head->extra != Z_NULL &&
+-                        len < state->head->extra_max) {
++                        (len = state->head->extra_len - state->length) <
++                            state->head->extra_max) {
+                         zmemcpy(state->head->extra + len, next,
+                                 len + copy > state->head->extra_max ?
+                                 state->head->extra_max - len : copy);
+-- 
+2.27.0
+

zlib.spec

@@ -1,6 +1,6 @@
 Name:             zlib
 Version:          1.2.11
-Release:          20
+Release:          21
 Summary:          A lossless data-compression library
 License:          zlib and Boost
 URL:              http://www.zlib.net
@@ -17,6 +17,8 @@ Patch4:           0004-zlib-Optimize-CRC32.patch
 Patch6000:        fix-undefined-buffer-detected-by-oss-fuzz.patch
 Patch6001:        backport-0001-CVE-2018-25032.patch
 Patch6002:        backport-0002-CVE-2018-25032.patch
+Patch6003:        backport-0001-CVE-2022-37434.patch
+Patch6004:        backport-0002-CVE-2022-37434.patch
 
 BuildRequires:    automake, autoconf, libtool
 
@@ -70,6 +72,8 @@ This package contains the development-related content related to minizip.
 %patch6000 -p1
 %patch6001 -p1
 %patch6002 -p1
+%patch6003 -p1
+%patch6004 -p1
 
 %build
 export CFLAGS="$RPM_OPT_FLAGS"
@@ -127,6 +131,9 @@ make test
 %{_libdir}/pkgconfig/minizip.pc
 
 %changelog
+* Fri Aug 12 2022 dongyuzhen <dongyuzhen@h-partners.com> - 1.2.11-21
+- fix CVE-2022-37434
+
 * Tue May 10 2022 tinawei <tianwei12@h-partners.com> - 1.2.11-20
 - Fix patches info for pre