[freetype2] master 0a33b44: * src/sfnt/ttcpal.c (tt_face_load_cpal): Add missing safety check.

[Werner LEMBERG]

branch: master
commit 0a33b44e6eb31b7c5bfed32cf723a0eee1e4e169
Author: Werner Lemberg <address@hidden>
Commit: Werner Lemberg <address@hidden>

    * 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
---
 ChangeLog         | 8 ++++++++
 src/sfnt/ttcpal.c | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index b928d36..9ddfad2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2018-08-21  Werner Lemberg  <address@hidden>
+
+       * 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  <address@hidden>
 
        [psaux] Avoid slow PS font parsing in case of error.
diff --git a/src/sfnt/ttcpal.c b/src/sfnt/ttcpal.c
index b18f0aa..be1b004 100644
--- 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 );