diff --git a/ruby-1.9.3-backport-from-trunk-rev37068.patch b/ruby-1.9.3-backport-from-trunk-rev37068.patch
new file mode 100644
index 0000000..81b6b79
--- /dev/null
+++ b/ruby-1.9.3-backport-from-trunk-rev37068.patch
@@ -0,0 +1,103 @@
+Patch from trunk for CVE-2012-4464, CVE-2012-4466
+Part for test/ruby/test_exception.rb was adjusted for ruby 1.9.3
+
+Mamoru Tasaka <mtasaka@fedoraproject.org>
+
+------------------------------------------------------------------------
+r37068 | shugo | 2012-10-03 02:25:10 +0900 (Wed, 03 Oct 2012) | 2 lines
+
+* error.c (exc_to_s, name_err_to_s, name_err_mesg_to_str): do not
+  taint messages.
+------------------------------------------------------------------------
+Index: error.c
+===================================================================
+--- error.c	(revision 37067)
++++ error.c	(revision 37068)
+@@ -635,7 +635,6 @@
+ 
+     if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc));
+     r = rb_String(mesg);
+-    OBJ_INFECT(r, exc);
+     return r;
+ }
+ 
+@@ -996,11 +995,7 @@
+ 
+     if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc));
+     StringValue(str);
+-    if (str != mesg) {
+-	rb_iv_set(exc, "mesg", mesg = str);
+-    }
+-    OBJ_INFECT(mesg, exc);
+-    return mesg;
++    return str;
+ }
+ 
+ /*
+@@ -1131,7 +1126,6 @@
+ 	args[2] = d;
+ 	mesg = rb_f_sprintf(NAME_ERR_MESG_COUNT, args);
+     }
+-    OBJ_INFECT(mesg, obj);
+     return mesg;
+ }
+ 
+Index: test/ruby/test_exception.rb
+===================================================================
+--- test/ruby/test_exception.rb	(revision 37067)
++++ test/ruby/test_exception.rb	(modified)
+@@ -333,4 +333,54 @@
+       load(t.path)
+     end
+   end
++
++  def test_to_s_taintness_propagation
++    for exc in [Exception, NameError]
++      m = "abcdefg"
++      e = exc.new(m)
++      e.taint
++      s = e.to_s
++      assert_equal(false, m.tainted?,
++                   "#{exc}#to_s should not propagate taintness")
++      assert_equal(false, s.tainted?,
++                   "#{exc}#to_s should not propagate taintness")
++    end
++    
++    o = Object.new
++    def o.to_str
++      "foo"
++    end
++    o.taint
++    e = NameError.new(o)
++    s = e.to_s
++    assert_equal(false, s.tainted?)
++  end
++
++  def test_exception_to_s_should_not_propagate_untrustedness
++    favorite_lang = "Ruby"
++
++    for exc in [Exception, NameError]
++      assert_raise(SecurityError) do
++        lambda {
++          $SAFE = 4
++          exc.new(favorite_lang).to_s
++          favorite_lang.replace("Python")
++        }.call
++      end
++    end
++
++    assert_raise(SecurityError) do
++      lambda {
++        $SAFE = 4
++        o = Object.new
++        o.singleton_class.send(:define_method, :to_str) {
++          favorite_lang
++        }
++        NameError.new(o).to_s
++        favorite_lang.replace("Python")
++      }.call
++    end
++
++    assert_equal("Ruby", favorite_lang)
++  end
+ end