* src/sfnt/sfwoff2.c (woff2_open_font): Check (sum of) table sizes. Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17684
diff --git a/ChangeLog b/ChangeLog
index fd20d92..16a5568 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2019-09-25 Werner Lemberg <wl@gnu.org>
+
+ * src/sfnt/sfwoff2.c (woff2_open_font): Check (sum of) table sizes.
+
+ Reported as
+
+ https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17684
+
2019-09-23 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftstroke.c (ft_stroke_border_arcto): Speed up calculations.
diff --git a/src/sfnt/sfwoff2.c b/src/sfnt/sfwoff2.c
index bb7c981..7d90179 100644
--- a/src/sfnt/sfwoff2.c
+++ b/src/sfnt/sfwoff2.c
@@ -2161,6 +2161,13 @@
goto Exit;
}
+ if ( woff2.uncompressed_size > sfnt_size )
+ {
+ FT_ERROR(( "woff2_open_font: SFNT table lengths are too large.\n" ));
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
/* Allocate memory for uncompressed table data. */
if ( FT_ALLOC( uncompressed_buf, woff2.uncompressed_size ) ||
FT_FRAME_ENTER( woff2.totalCompressedSize ) )