diff --git a/packages/zlib/build.sh b/packages/zlib/build.sh
index 8848016c0..f6e078a7c 100644
--- a/packages/zlib/build.sh
+++ b/packages/zlib/build.sh
@@ -2,13 +2,19 @@ TERMUX_PKG_HOMEPAGE=https://www.zlib.net/
 TERMUX_PKG_DESCRIPTION="Compression library implementing the deflate compression method found in gzip and PKZIP"
 TERMUX_PKG_LICENSE="ZLIB"
 TERMUX_PKG_MAINTAINER="@termux"
-TERMUX_PKG_VERSION=1.2.11
-TERMUX_PKG_REVISION=5
+TERMUX_PKG_VERSION=1.2.12
 TERMUX_PKG_SRCURL=https://www.zlib.net/zlib-$TERMUX_PKG_VERSION.tar.xz
-TERMUX_PKG_SHA256=4ff941449631ace0d4d203e3483be9dbc9da454084111f97ea0a2114e19bf066
+TERMUX_PKG_SHA256=7db46b8d7726232a621befaab4a1c870f00a90805511c0e0090441dac57def18
 TERMUX_PKG_BREAKS="ndk-sysroot (<< 19b-3), zlib-dev"
 TERMUX_PKG_REPLACES="ndk-sysroot (<< 19b-3), zlib-dev"
 
+termux_step_pre_configure() {
+	if [ "$TERMUX_ARCH" = "aarch64" ]; then
+		CFLAGS+=" -march=armv8-a+crc"
+		CXXFLAGS+=" -march=armv8-a+crc"
+	fi
+}
+
 termux_step_configure() {
 	"$TERMUX_PKG_SRCDIR/configure" --prefix=$TERMUX_PREFIX
 	sed -n '/Copyright (C) 1995-/,/madler@alumni.caltech.edu/p' "$TERMUX_PKG_SRCDIR/zlib.h" > "$TERMUX_PKG_SRCDIR/LICENSE"
diff --git a/packages/zlib/zlib-1.2.12-correct-incorrect-CRC-inputs.patch b/packages/zlib/zlib-1.2.12-correct-incorrect-CRC-inputs.patch
new file mode 100644
index 000000000..85a6a7e3a
--- /dev/null
+++ b/packages/zlib/zlib-1.2.12-correct-incorrect-CRC-inputs.patch
@@ -0,0 +1,51 @@
+From ec3df00224d4b396e2ac6586ab5d25f673caa4c2 Mon Sep 17 00:00:00 2001
+From: Mark Adler <madler@alumni.caltech.edu>
+Date: Wed, 30 Mar 2022 11:14:53 -0700
+Subject: [PATCH] Correct incorrect inputs provided to the CRC functions.
+
+The previous releases of zlib were not sensitive to incorrect CRC
+inputs with bits set above the low 32. This commit restores that
+behavior, so that applications with such bugs will continue to
+operate as before.
+---
+ crc32.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/crc32.c b/crc32.c
+index a1bdce5c2..451887bc7 100644
+--- a/crc32.c
++++ b/crc32.c
+@@ -630,7 +630,7 @@ unsigned long ZEXPORT crc32_z(crc, buf, len)
+ #endif /* DYNAMIC_CRC_TABLE */
+ 
+     /* Pre-condition the CRC */
+-    crc ^= 0xffffffff;
++    crc = (~crc) & 0xffffffff;
+ 
+     /* Compute the CRC up to a word boundary. */
+     while (len && ((z_size_t)buf & 7) != 0) {
+@@ -749,7 +749,7 @@ unsigned long ZEXPORT crc32_z(crc, buf, len)
+ #endif /* DYNAMIC_CRC_TABLE */
+ 
+     /* Pre-condition the CRC */
+-    crc ^= 0xffffffff;
++    crc = (~crc) & 0xffffffff;
+ 
+ #ifdef W
+ 
+@@ -1077,7 +1077,7 @@ uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
+ #ifdef DYNAMIC_CRC_TABLE
+     once(&made, make_crc_table);
+ #endif /* DYNAMIC_CRC_TABLE */
+-    return multmodp(x2nmodp(len2, 3), crc1) ^ crc2;
++    return multmodp(x2nmodp(len2, 3), crc1) ^ (crc2 & 0xffffffff);
+ }
+ 
+ /* ========================================================================= */
+@@ -1112,5 +1112,5 @@ uLong crc32_combine_op(crc1, crc2, op)
+     uLong crc2;
+     uLong op;
+ {
+-    return multmodp(op, crc1) ^ crc2;
++    return multmodp(op, crc1) ^ (crc2 & 0xffffffff);
+ }
diff --git a/packages/zlib/zlib-1.2.12-fix-configure-CC-definition.patch b/packages/zlib/zlib-1.2.12-fix-configure-CC-definition.patch
new file mode 100644
index 000000000..0136071ea
--- /dev/null
+++ b/packages/zlib/zlib-1.2.12-fix-configure-CC-definition.patch
@@ -0,0 +1,24 @@
+From 05796d3d8d5546cf1b4dfe2cd72ab746afae505d Mon Sep 17 00:00:00 2001
+From: Mark Adler <madler@alumni.caltech.edu>
+Date: Mon, 28 Mar 2022 18:34:10 -0700
+Subject: [PATCH] Fix configure issue that discarded provided CC definition.
+
+---
+ configure | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/configure b/configure
+index 52ff4a04e..3fa3e8618 100755
+--- a/configure
++++ b/configure
+@@ -174,7 +174,10 @@ if test -z "$CC"; then
+   else
+     cc=${CROSS_PREFIX}cc
+   fi
++else
++  cc=${CC}
+ fi
++
+ cflags=${CFLAGS-"-O3"}
+ # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
+ case "$cc" in