From 240c94a185cd8dae7d03059abec8a5662c35ecd3 Mon Sep 17 00:00:00 2001

From: suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>

Date: Wed, 26 Nov 2014 06:43:29 +0000

Subject: Fix Savannah bug #43538.

* src/base/ftobjs.c (Mac_Read_POST_Resource): Fix integer overflow

by a broken POST table in resource-fork.

---

diff --git a/src/base/ftobjs.c b/src/base/ftobjs.c

index 4d60e88..ffbbc32 100644

--- a/src/base/ftobjs.c

+++ b/src/base/ftobjs.c

@@ -1565,10 +1565,23 @@

         goto Exit;

       if ( FT_READ_LONG( temp ) )

         goto Exit;

+      if ( 0 > temp )

+        error = FT_Err_Invalid_Offset;

+      else if ( 0x7FFFFFFFL - 6 - pfb_len < temp )

+        error = FT_Err_Array_Too_Large;

+

+      if ( error )

+        goto Exit;

+

       pfb_len += temp + 6;

     }

-    if ( FT_ALLOC( pfb_data, (FT_Long)pfb_len + 2 ) )

+    if ( 0x7FFFFFFFL - 2 < pfb_len )

+      error = FT_Err_Array_Too_Large;

+    else

+      error = FT_ALLOC( pfb_data, (FT_Long)pfb_len + 2 );

+

+    if ( error )

       goto Exit;

     pfb_data[0] = 0x80;

--

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