shithub: freetype+ttf2subf

Download patch

ref: a660e3de422731b94d4a134d27555430cbb6fb39
parent: 69ce97391cc2e7cbc4b6e2e7b7e62708a46280c6
author: Werner Lemberg <[email protected]>
date: Thu Aug 25 20:23:27 EDT 2016 

[type1] Fix heap buffer overflow.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36

* src/type1/t1load.c (parse_charstrings): Reject fonts that don't
contain glyph names.

git/fs: mount .git/fs: mount/attach disallowed 
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2016-08-26  Werner Lemberg  <[email protected]>
+
+	[type1] Fix heap buffer overflow.
+
+	Reported as
+
+	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36
+
+	* src/type1/t1load.c (parse_charstrings): Reject fonts that don't
+	contain glyph names.
+
 2016-08-25  Werner Lemberg  <[email protected]>
 
 	[sfnt] Fix previous commit (#48901).
--- a/src/type1/t1load.c
+++ b/src/type1/t1load.c
@@ -1776,6 +1776,12 @@
       }
     }
 
+    if ( !n )
+    {
+      error = FT_THROW( Invalid_File_Format );
+      goto Fail;
+    }
+
     loader->num_glyphs = n;
 
     /* if /.notdef is found but does not occupy index 0, do our magic. */