Sam Edwards : gdi32: Prevent another possible buffer overflow in get_glyph_outline.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 53ec9b3291be1d7a5531aa2a04dbcf6b1fa83b9c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=53ec9b3291be1d7a5531aa2a04...

Author: Sam Edwards <CFSworks(a)gmail.com>
Date:   Tue Apr 30 00:41:47 2013 -0600

gdi32: Prevent another possible buffer overflow in get_glyph_outline.

---

 dlls/gdi32/freetype.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/dlls/gdi32/freetype.c b/dlls/gdi32/freetype.c
index fec752a..5b3c138 100644
--- a/dlls/gdi32/freetype.c
+++ b/dlls/gdi32/freetype.c
@@ -6362,9 +6362,10 @@ static DWORD get_glyph_outline(GdiFont *incoming_font, UINT glyph, UINT format,
                 y_shift = height - (src_height / vmul);
 
             dst += x_shift + y_shift * ( pitch / 4 );
-            while ( src_height )
+            height = min( height, src_height / vmul );
+            while ( height-- )
             {
-                for ( x = 0; x < src_width / hmul; x++ )
+                for ( x = 0; x < width && x < src_width / hmul; x++ )
                 {
                     if ( rgb )
                     {