gdk-pixbuf: Security fix CVE-2015-7674

CVE-2015-7674 Heap overflow with a gif file in gdk-pixbuf < 2.32.1

(From OE-Core master rev: f2b16d0f9c3ad67fdf63e9e41f42a6d54f1043e4)

(From OE-Core rev: 50602eebe1150819c320b6b611dcd792573eb55a)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/meta/recipes-gnome/gdk-pixbuf/gdk-pixbuf/CVE-2015-7674.patch b/meta/recipes-gnome/gdk-pixbuf/gdk-pixbuf/CVE-2015-7674.patch
new file mode 100644
index 0000000000..d516e88ab5
--- /dev/null
+++ b/meta/recipes-gnome/gdk-pixbuf/gdk-pixbuf/CVE-2015-7674.patch
@@ -0,0 +1,39 @@
+From e9a5704edaa9aee9498f1fbf6e1b70fcce2e55aa Mon Sep 17 00:00:00 2001
+From: Benjamin Otte <otte@redhat.com>
+Date: Tue, 22 Sep 2015 22:44:51 +0200
+Subject: [PATCH] pixops: Don't overflow variables when shifting them
+
+If we shift by 16 bits we need to be sure those 16 bits actually exist.
+They do now.
+
+Upstream-status: Backport
+https://git.gnome.org/browse/gdk-pixbuf/commit/?id=e9a5704edaa9aee9498f1fbf6e1b70fcce2e55aa
+
+CVE:  CVE-2015-7674
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ gdk-pixbuf/pixops/pixops.c | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+Index: gdk-pixbuf-2.30.8/gdk-pixbuf/pixops/pixops.c
+===================================================================
+--- gdk-pixbuf-2.30.8.orig/gdk-pixbuf/pixops/pixops.c
++++ gdk-pixbuf-2.30.8/gdk-pixbuf/pixops/pixops.c
+@@ -264,11 +264,11 @@ pixops_scale_nearest (guchar        *des
+                      double         scale_x,
+                      double         scale_y)
+ {
+-  int i;
+-  int x;
+-  int x_step = (1 << SCALE_SHIFT) / scale_x;
+-  int y_step = (1 << SCALE_SHIFT) / scale_y;
+-  int xmax, xstart, xstop, x_pos, y_pos;
++  gint64 i;
++  gint64 x;
++  gint64 x_step = (1 << SCALE_SHIFT) / scale_x;
++  gint64 y_step = (1 << SCALE_SHIFT) / scale_y;
++  gint64 xmax, xstart, xstop, x_pos, y_pos;
+   const guchar *p;
+ 
+ #define INNER_LOOP(SRC_CHANNELS,DEST_CHANNELS,ASSIGN_PIXEL)     \