diff --git a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_1.patch b/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_1.patch
deleted file mode 100644
index 25fe136..0000000
--- a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_1.patch
+++ /dev/null
@@ -1,91 +0,0 @@
-From 81f44665cce4cb1373f049a76f3904e981b7a766 Mon Sep 17 00:00:00 2001
-From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
-Date: Thu, 29 Oct 2015 09:26:41 -0500
-Subject: [PATCH] [libpng16] Reject attempt to write over-length PLTE chunk
-
-Upstream-Status: Backport
-https://github.com/glennrp/libpng/commit/81f44665cce4cb1373f049a76f3904e981b7a766
-
-CVE: CVE-2015-8126 patch #1
-
-Signed-off-by: Armin Kuster <akuster@mvista.com>
-
----
- libpng-manual.txt | 5 +++++
- libpng.3          | 5 +++++
- pngwrite.c        | 4 ++--
- pngwutil.c        | 7 +++++--
- 4 files changed, 17 insertions(+), 4 deletions(-)
-
-Index: libpng-1.6.17/libpng-manual.txt
-===================================================================
---- libpng-1.6.17.orig/libpng-manual.txt
-+++ libpng-1.6.17/libpng-manual.txt
-@@ -5109,6 +5109,11 @@ length, which resulted in PNG files that
- chunk.  This error was fixed in libpng-1.6.3, and a tool (called
- contrib/tools/png-fix-itxt) has been added to the libpng distribution.
- 
-+Starting with libpng-1.6.19, attempting to write an over-length PLTE chunk
-+is an error. Previously this requirement of the PNG specification was not
-+enforced. Libpng continues to accept over-length PLTE chunks when reading,
-+but does not make any use of the extra entries.
-+
- XIII.  Detecting libpng
- 
- The png_get_io_ptr() function has been present since libpng-0.88, has never
-Index: libpng-1.6.17/libpng.3
-===================================================================
---- libpng-1.6.17.orig/libpng.3
-+++ libpng-1.6.17/libpng.3
-@@ -5613,6 +5613,11 @@ length, which resulted in PNG files that
- chunk.  This error was fixed in libpng-1.6.3, and a tool (called
- contrib/tools/png-fix-itxt) has been added to the libpng distribution.
- 
-+Starting with libpng-1.6.19, attempting to write an over-length PLTE chunk
-+is an error. Previously this requirement of the PNG specification was not
-+enforced. Libpng continues to accept over-length PLTE chunks when reading,
-+but does not make any use of the extra entries.
-+
- .SH XIII.  Detecting libpng
- 
- The png_get_io_ptr() function has been present since libpng-0.88, has never
-Index: libpng-1.6.17/pngwrite.c
-===================================================================
---- libpng-1.6.17.orig/pngwrite.c
-+++ libpng-1.6.17/pngwrite.c
-@@ -205,7 +205,7 @@ png_write_info(png_structrp png_ptr, png
-       png_write_PLTE(png_ptr, info_ptr->palette,
-           (png_uint_32)info_ptr->num_palette);
- 
--   else if ((info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) !=0)
-+   else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-       png_error(png_ptr, "Valid palette required for paletted images");
- 
- #ifdef PNG_WRITE_tRNS_SUPPORTED
-Index: libpng-1.6.17/pngwutil.c
-===================================================================
---- libpng-1.6.17.orig/pngwutil.c
-+++ libpng-1.6.17/pngwutil.c
-@@ -922,17 +922,20 @@ void /* PRIVATE */
- png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
-     png_uint_32 num_pal)
- {
--   png_uint_32 i;
-+   png_uint_32 max_num_pal, i;
-    png_const_colorp pal_ptr;
-    png_byte buf[3];
- 
-    png_debug(1, "in png_write_PLTE");
- 
-+   max_num_pal = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
-+      (1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
-+
-    if ((
- #ifdef PNG_MNG_FEATURES_SUPPORTED
-        (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0 &&
- #endif
--       num_pal == 0) || num_pal > 256)
-+       num_pal == 0) || num_pal > max_num_pal)
-    {
-       if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-       {
diff --git a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_2.patch b/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_2.patch
deleted file mode 100644
index 4aa9170..0000000
--- a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_2.patch
+++ /dev/null
@@ -1,134 +0,0 @@
-From a901eb3ce6087e0afeef988247f1a1aa208cb54d Mon Sep 17 00:00:00 2001
-From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
-Date: Fri, 30 Oct 2015 07:57:49 -0500
-Subject: [PATCH] [libpng16] Prevent reading over-length PLTE chunk (Cosmin
- Truta).
-
-Upstream-Status: Backport
-https://github.com/glennrp/libpng/commit/a901eb3ce6087e0afeef988247f1a1aa208cb54d
-
-Many changes involved date and version updates with don't apply in this case.
-
-CVE: CVE-2015-8126 patch #2
-Signed-off-by: Armin Kuster <akuster@mvista.com>
-
----
- ANNOUNCE          |  6 +++---
- CHANGES           |  4 ++--
- libpng-manual.txt | 11 +++++------
- libpng.3          | 19 +++++++++----------
- pngrutil.c        |  3 +++
- pngset.c          | 13 +++++++++----
- pngwutil.c        |  6 +++---
- 7 files changed, 34 insertions(+), 28 deletions(-)
-
-Index: libpng-1.6.17/libpng-manual.txt
-===================================================================
---- libpng-1.6.17.orig/libpng-manual.txt
-+++ libpng-1.6.17/libpng-manual.txt
-@@ -5109,10 +5109,9 @@ length, which resulted in PNG files that
- chunk.  This error was fixed in libpng-1.6.3, and a tool (called
- contrib/tools/png-fix-itxt) has been added to the libpng distribution.
- 
--Starting with libpng-1.6.19, attempting to write an over-length PLTE chunk
-+Starting with libpng-1.6.19, attempting to set an over-length PLTE chunk
- is an error. Previously this requirement of the PNG specification was not
--enforced. Libpng continues to accept over-length PLTE chunks when reading,
--but does not make any use of the extra entries.
-+enforced, and the palette was always limited to 256 entries.
- 
- XIII.  Detecting libpng
- 
-Index: libpng-1.6.17/libpng.3
-===================================================================
---- libpng-1.6.17.orig/libpng.3
-+++ libpng-1.6.17/libpng.3
-@@ -5613,10 +5613,9 @@ length, which resulted in PNG files that
- chunk.  This error was fixed in libpng-1.6.3, and a tool (called
- contrib/tools/png-fix-itxt) has been added to the libpng distribution.
- 
--Starting with libpng-1.6.19, attempting to write an over-length PLTE chunk
-+Starting with libpng-1.6.19, attempting to set an over-length PLTE chunk
- is an error. Previously this requirement of the PNG specification was not
--enforced. Libpng continues to accept over-length PLTE chunks when reading,
--but does not make any use of the extra entries.
-+enforced, and the palette was always limited to 256 entries.
- 
- .SH XIII.  Detecting libpng
- 
-Index: libpng-1.6.17/pngrutil.c
-===================================================================
---- libpng-1.6.17.orig/pngrutil.c
-+++ libpng-1.6.17/pngrutil.c
-@@ -997,6 +997,9 @@ png_handle_PLTE(png_structrp png_ptr, pn
-     * confusing.
-     *
-     * Fix this by not sharing the palette in this way.
-+    *
-+    * Starting with libpng-1.6.19, png_set_PLTE() also issues a png_error() when
-+    * it attempts to set a palette length that is too large for the bit depth.
-     */
-    png_set_PLTE(png_ptr, info_ptr, palette, num);
- 
-Index: libpng-1.6.17/pngset.c
-===================================================================
---- libpng-1.6.17.orig/pngset.c
-+++ libpng-1.6.17/pngset.c
-@@ -513,12 +513,17 @@ png_set_PLTE(png_structrp png_ptr, png_i
-     png_const_colorp palette, int num_palette)
- {
- 
-+   png_uint_32 max_palette_length;
-+
-    png_debug1(1, "in %s storage function", "PLTE");
- 
-    if (png_ptr == NULL || info_ptr == NULL)
-       return;
- 
--   if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH)
-+   max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
-+      (1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
-+
-+   if (num_palette < 0 || num_palette > max_palette_length)
-    {
-       if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-          png_error(png_ptr, "Invalid palette length");
-@@ -551,8 +556,8 @@ png_set_PLTE(png_structrp png_ptr, png_i
-    png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
- 
-    /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
--    * of num_palette entries, in case of an invalid PNG file that has
--    * too-large sample values.
-+    * of num_palette entries, in case of an invalid PNG file or incorrect
-+    * call to png_set_PLTE() with too-large sample values.
-     */
-    png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr,
-        PNG_MAX_PALETTE_LENGTH * (sizeof (png_color))));
-Index: libpng-1.6.17/pngwutil.c
-===================================================================
---- libpng-1.6.17.orig/pngwutil.c
-+++ libpng-1.6.17/pngwutil.c
-@@ -922,20 +922,20 @@ void /* PRIVATE */
- png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
-     png_uint_32 num_pal)
- {
--   png_uint_32 max_num_pal, i;
-+   png_uint_32 max_palette_length, i;
-    png_const_colorp pal_ptr;
-    png_byte buf[3];
- 
-    png_debug(1, "in png_write_PLTE");
- 
--   max_num_pal = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
-+   max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
-       (1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
- 
-    if ((
- #ifdef PNG_MNG_FEATURES_SUPPORTED
-        (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0 &&
- #endif
--       num_pal == 0) || num_pal > max_num_pal)
-+       num_pal == 0) || num_pal > max_palette_length)
-    {
-       if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-       {
diff --git a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_3.patch b/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_3.patch
deleted file mode 100644
index 0e0ad23..0000000
--- a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_3.patch
+++ /dev/null
@@ -1,79 +0,0 @@
-From 1bef8e97995c33123665582e57d3ed40b57d5978 Mon Sep 17 00:00:00 2001
-From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
-Date: Fri, 30 Oct 2015 11:34:37 -0500
-Subject: [PATCH] [libpng16] Silently truncate over-length PLTE chunk while
- reading.
-
-Upstream-Status: Backport
-https://github.com/glennrp/libpng/commit/1bef8e97995c33123665582e57d3ed40b57d5978
-
-Normal Issues is date and version conflicts not applied.
-
-CVE: CVE-2015-8i26 patch #3
-
-Signed-off-by: Armin Kuster <akuster@mvista.com>
-
-
----
- ANNOUNCE   |  3 ++-
- CHANGES    |  3 ++-
- pngrutil.c | 15 +++++++++++----
- pngset.c   |  2 +-
- 4 files changed, 16 insertions(+), 7 deletions(-)
-
-Index: libpng-1.6.17/pngrutil.c
-===================================================================
---- libpng-1.6.17.orig/pngrutil.c
-+++ libpng-1.6.17/pngrutil.c
-@@ -867,7 +867,7 @@ void /* PRIVATE */
- png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
- {
-    png_color palette[PNG_MAX_PALETTE_LENGTH];
--   int num, i;
-+   int max_palette_length, num, i;
- #ifdef PNG_POINTER_INDEXING_SUPPORTED
-    png_colorp pal_ptr;
- #endif
-@@ -925,9 +925,19 @@ png_handle_PLTE(png_structrp png_ptr, pn
-       return;
-    }
- 
-+   max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
-+      (1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
-+
-    /* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */
-    num = (int)length / 3;
- 
-+   /* If the palette has 256 or fewer entries but is too large for the bit depth,
-+    * we don't issue an error, to preserve the behavior of previous libpng versions.
-+    * We silently truncate the unused extra palette entries here.
-+    */
-+   if (num > max_palette_length)
-+     num = max_palette_length;
-+
- #ifdef PNG_POINTER_INDEXING_SUPPORTED
-    for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
-    {
-@@ -997,9 +1007,6 @@ png_handle_PLTE(png_structrp png_ptr, pn
-     * confusing.
-     *
-     * Fix this by not sharing the palette in this way.
--    *
--    * Starting with libpng-1.6.19, png_set_PLTE() also issues a png_error() when
--    * it attempts to set a palette length that is too large for the bit depth.
-     */
-    png_set_PLTE(png_ptr, info_ptr, palette, num);
- 
-Index: libpng-1.6.17/pngset.c
-===================================================================
---- libpng-1.6.17.orig/pngset.c
-+++ libpng-1.6.17/pngset.c
-@@ -523,7 +523,7 @@ png_set_PLTE(png_structrp png_ptr, png_i
-    max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
-       (1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
- 
--   if (num_palette < 0 || num_palette > max_palette_length)
-+   if (num_palette < 0 || num_palette > (int) max_palette_length)
-    {
-       if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-          png_error(png_ptr, "Invalid palette length");
diff --git a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_4.patch b/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_4.patch
deleted file mode 100644
index 2622630..0000000
--- a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8126_4.patch
+++ /dev/null
@@ -1,48 +0,0 @@
-From 83f4c735c88e7f451541c1528d8043c31ba3b466 Mon Sep 17 00:00:00 2001
-From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
-Date: Thu, 5 Nov 2015 11:18:44 -0600
-Subject: [PATCH] [libpng16] Clean up coding style in png_handle_PLTE()
-
-Upstream-Status: Backport
-https://github.com/glennrp/libpng/commit/83f4c735c88e7f451541c1528d8043c31ba3b466
-
-CVE:  CVE-2015-8126 patch #4
-Signed-off-by: Armin Kuster <akuster@mvista.com>
-
----
- pngrutil.c | 17 ++++++++++-------
- 1 file changed, 10 insertions(+), 7 deletions(-)
-
-Index: libpng-1.6.17/pngrutil.c
-===================================================================
---- libpng-1.6.17.orig/pngrutil.c
-+++ libpng-1.6.17/pngrutil.c
-@@ -925,18 +925,21 @@ png_handle_PLTE(png_structrp png_ptr, pn
-       return;
-    }
- 
--   max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
--      (1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
--
-    /* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */
-    num = (int)length / 3;
- 
--   /* If the palette has 256 or fewer entries but is too large for the bit depth,
--    * we don't issue an error, to preserve the behavior of previous libpng versions.
--    * We silently truncate the unused extra palette entries here.
-+   /* If the palette has 256 or fewer entries but is too large for the bit
-+    * depth, we don't issue an error, to preserve the behavior of previous
-+    * libpng versions. We silently truncate the unused extra palette entries
-+    * here.
-     */
-+   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-+      max_palette_length = (1 << png_ptr->bit_depth);
-+   else
-+      max_palette_length = PNG_MAX_PALETTE_LENGTH;
-+
-    if (num > max_palette_length)
--     num = max_palette_length;
-+      num = max_palette_length;
- 
- #ifdef PNG_POINTER_INDEXING_SUPPORTED
-    for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
diff --git a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8472.patch b/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8472.patch
deleted file mode 100644
index 404f012..0000000
--- a/yocto-poky/meta/recipes-multimedia/libpng/libpng-1.6.17/CVE-2015-8472.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-From 9f2ad4928e47036cf1ac9b8fe45a491f15be2324 Mon Sep 17 00:00:00 2001
-From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
-Date: Wed, 4 Nov 2015 23:47:42 -0600
-Subject: [PATCH] [libpng16] Fixed new bug with CRC error after reading an
- over-length palette.
-
-Upstream-Status: Backport
-CVE: CVE-2015-8472 
-
-https://github.com/glennrp/libpng/commit/9f2ad4928e47036cf1ac9b8fe45a491f15be2324
-Signed-off-by: Armin Kuster <akuster@mvista.com>
-
----
- pngrutil.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-Index: libpng-1.6.17/pngrutil.c
-===================================================================
---- libpng-1.6.17.orig/pngrutil.c
-+++ libpng-1.6.17/pngrutil.c
-@@ -973,7 +973,7 @@ png_handle_PLTE(png_structrp png_ptr, pn
-    if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- #endif
-    {
--      png_crc_finish(png_ptr, 0);
-+      png_crc_finish(png_ptr, (int) length - num * 3);
-    }
- 
- #ifndef PNG_READ_OPT_PLTE_SUPPORTED
diff --git a/yocto-poky/meta/recipes-multimedia/libpng/libpng_1.6.17.bb b/yocto-poky/meta/recipes-multimedia/libpng/libpng_1.6.17.bb
deleted file mode 100644
index cc288c7..0000000
--- a/yocto-poky/meta/recipes-multimedia/libpng/libpng_1.6.17.bb
+++ /dev/null
@@ -1,35 +0,0 @@
-SUMMARY = "PNG image format decoding library"
-HOMEPAGE = "http://www.libpng.org/"
-SECTION = "libs"
-LICENSE = "Libpng"
-LIC_FILES_CHKSUM = "file://LICENSE;md5=b9b75399b72e4a8656cf3a6ddfc86d9a \
-                    file://png.h;endline=16;md5=cc9c2d1eafda17e1277a6f99a9fc29c4 \
-                    file://png.h;beginline=242;endline=356;md5=599316819d525dde2bfdf28fe3f323af"
-DEPENDS = "zlib"
-LIBV = "16"
-
-SRC_URI = "${SOURCEFORGE_MIRROR}/project/libpng/libpng${LIBV}/older-releases/${PV}/libpng-${PV}.tar.xz \
-          "
-SRC_URI += "\
-            file://CVE-2015-8126_1.patch \
-            file://CVE-2015-8126_2.patch \
-            file://CVE-2015-8126_3.patch \
-            file://CVE-2015-8126_4.patch \
-            file://CVE-2015-8472.patch \
-            "
-
-SRC_URI[md5sum] = "430a9b76b78533235cd4b9b26ce75c7e"
-SRC_URI[sha256sum] = "98507b55fbe5cd43c51981f2924e4671fd81fe35d52dc53357e20f2c77fa5dfd"
-
-BINCONFIG = "${bindir}/libpng-config ${bindir}/libpng16-config"
-
-inherit autotools binconfig-disabled pkgconfig
-
-# Work around missing symbols
-EXTRA_OECONF_append_class-target = " ${@bb.utils.contains("TUNE_FEATURES", "neon", "--enable-arm-neon=on", "--enable-arm-neon=off" ,d)}"
-
-PACKAGES =+ "${PN}-tools"
-
-FILES_${PN}-tools = "${bindir}/png-fix-itxt ${bindir}/pngfix"
-
-BBCLASSEXTEND = "native nativesdk"
diff --git a/yocto-poky/meta/recipes-multimedia/libpng/libpng_1.6.21.bb b/yocto-poky/meta/recipes-multimedia/libpng/libpng_1.6.21.bb
new file mode 100644
index 0000000..58cef1f
--- /dev/null
+++ b/yocto-poky/meta/recipes-multimedia/libpng/libpng_1.6.21.bb
@@ -0,0 +1,25 @@
+SUMMARY = "PNG image format decoding library"
+HOMEPAGE = "http://www.libpng.org/"
+SECTION = "libs"
+LICENSE = "Libpng"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=06a1b6fde6d93170bb72201c8000bf3d \
+                    file://png.h;endline=112;md5=9a8b5f83e1e8046df672deab87f235be"
+DEPENDS = "zlib"
+
+SRC_URI = "${GENTOO_MIRROR}/libpng-${PV}.tar.xz \
+          "
+SRC_URI[md5sum] = "3bacb4728f6694a64ad9052769d6a4ce"
+SRC_URI[sha256sum] = "6c8f1849eb9264219bf5d703601e5abe92a58651ecae927a03d1a1aa15ee2083"
+
+BINCONFIG = "${bindir}/libpng-config ${bindir}/libpng16-config"
+
+inherit autotools binconfig-disabled pkgconfig
+
+# Work around missing symbols
+EXTRA_OECONF_append_class-target = " ${@bb.utils.contains("TUNE_FEATURES", "neon", "--enable-arm-neon=on", "--enable-arm-neon=off" ,d)}"
+
+PACKAGES =+ "${PN}-tools"
+
+FILES_${PN}-tools = "${bindir}/png-fix-itxt ${bindir}/pngfix"
+
+BBCLASSEXTEND = "native nativesdk"