cairo: Fix CVE-2017-7475

CVE: CVE-2017-7475

Bug 100763 - Denial-of-Service Attack due to Logical Problem in Program

https://bugs.freedesktop.org/show_bug.cgi?id=100763

(From OE-Core rev: 03be750d9c5a090141a9d76f8ee30d5f696a8595)

Signed-off-by: Fan Xin <fan.xin@jp.fujitsu.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/meta/recipes-graphics/cairo/cairo/cairo-get_bitmap_surface-bsc1036789-CVE-2017-7475.diff b/meta/recipes-graphics/cairo/cairo/cairo-get_bitmap_surface-bsc1036789-CVE-2017-7475.diff
new file mode 100644
index 0000000000..7aaad2eedd
--- /dev/null
+++ b/meta/recipes-graphics/cairo/cairo/cairo-get_bitmap_surface-bsc1036789-CVE-2017-7475.diff
@@ -0,0 +1,22 @@
+Cairo: Fix Denial-of-Service Attack due to Logical Problem in Program
+
+https://bugs.freedesktop.org/show_bug.cgi?id=100763
+
+CVE: CVE-2017-7475
+Upstream-Status: Submitted
+
+Signed-off-by: Fan Xin <fan.xin@jp.fujitsu.com>
+
+Index: cairo-1.15.4/src/cairo-ft-font.c
+===================================================================
+--- cairo-1.15.4.orig/src/cairo-ft-font.c
++++ cairo-1.15.4/src/cairo-ft-font.c
+@@ -1149,7 +1149,7 @@ _get_bitmap_surface (FT_Bitmap                 *bi
+     width = bitmap->width;
+     height = bitmap->rows;
+ 
+-    if (width == 0 || height == 0) {
++    if (width == 0 || height == 0 || bitmap->buffer == NULL) {
+        *surface = (cairo_image_surface_t *)
+            cairo_image_surface_create_for_data (NULL, format, 0, 0, 0);
+        return (*surface)->base.status;