fix CVE-2022-37434

(cherry picked from commit bbc47fa7e9400e758ea0f4105133dcb8460a85c4)

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 2a0ac30..95a38f5 100644
+--- a/inflate.c
++++ b/inflate.c
+@@ -765,9 +765,10 @@ 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 95a38f5..9c5934e 100644
+--- a/inflate.c
++++ b/inflate.c
+@@ -765,10 +765,10 @@ 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:          21
+Release:          22
 Summary:          A lossless data-compression library
 License:          zlib and Boost
 URL:              http://www.zlib.net
@@ -21,6 +21,8 @@ Patch6:           0005-Accelerate-Adler32-using-arm64-SVE-instructions.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
 
@@ -121,6 +123,9 @@ make test
 %{_libdir}/pkgconfig/minizip.pc
 
 %changelog
+* Fri Aug 12 2022 dongyuzhen <dongyuzhen@h-partners.com> - 1.2.11-22
+- fix CVE-2022-37434
+
 * Mon Apr 18 2022 tianwei <tianwei12@h-partners.com> - 1.2.11-21
 - modify patch info for CVE-2018-25032