* src/truetype/ttinterp.c (Ins_GETVARIATION): Avoid NULL reference.

Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5736
7 years ago · 29c759284e
parent f438e06972
commit 29c759284e
2 changed files with 18 additions and 2 deletions
--- a/8
+++ b/8
@ -1,3 +1,11 @@
+2018-01-27  Werner Lemberg  <wl@gnu.org>
+
+	* src/truetype/ttinterp.c (Ins_GETVARIATION): Avoid NULL reference.
+
+	Reported as
+
+	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5736
+
 2018-01-27  Werner Lemberg  <wl@gnu.org>

 	* src/truetype/ttgxvar.c (tt_set_mm_blend): Minor.
--- a/src/truetype/ttinterp.c
+++ b/src/truetype/ttinterp.c
@ -7532,8 +7532,16 @@
      return;
    }

-    for ( i = 0; i < num_axes; i++ )
-      args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
+    if ( coords )
+    {
+      for ( i = 0; i < num_axes; i++ )
+        args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
+    }
+    else
+    {
+      for ( i = 0; i < num_axes; i++ )
+        args[i] = 0;
+    }
  }