* src/sfnt/ttcpal.c (tt_face_load_cpal): Add missing safety check.

Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9981
6 years ago · 0a33b44e6e
parent 4873eb1d31
commit 0a33b44e6e
2 changed files with 11 additions and 0 deletions
--- a/8
+++ b/8
@ -1,3 +1,11 @@
+2018-08-21  Werner Lemberg  <wl@gnu.org>
+
+	* src/sfnt/ttcpal.c (tt_face_load_cpal): Add missing safety check.
+
+	Reported as
+
+	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9981
+
 2018-08-18  Werner Lemberg  <wl@gnu.org>

 	[psaux] Avoid slow PS font parsing in case of error.
--- a/src/sfnt/ttcpal.c
+++ b/src/sfnt/ttcpal.c
@ -121,6 +121,9 @@
    if ( cpal->num_colors * COLOR_SIZE > table_size - colors_offset )
      goto InvalidTable;

+    if ( face->palette_data.num_palette_entries > cpal->num_colors )
+      goto InvalidTable;
+
    cpal->color_indices = p;
    cpal->colors        = (FT_Byte*)( table + colors_offset );