diff -r 6d278f426417 Lib/ssl.py
--- a/Lib/ssl.py	Fri Jul 05 18:05:29 2013 -1000
+++ b/Lib/ssl.py	Sun Jul 07 15:47:45 2013 +0200
@@ -402,6 +402,10 @@
         Return zero-length string on EOF."""
 
         self._checkClosed()
+
+        if not self._sslobj:
+            raise ValueError("Read on closed SSL socket.")
+
         try:
             if buffer is not None:
                 v = self._sslobj.read(len, buffer)
@@ -422,6 +426,10 @@
         number of bytes of DATA actually transmitted."""
 
         self._checkClosed()
+
+        if not self._sslobj:
+            raise ValueError("Write on closed SSL socket.")
+
         return self._sslobj.write(data)
 
     def getpeercert(self, binary_form=False):
diff -r 6d278f426417 Lib/test/test_ssl.py
--- a/Lib/test/test_ssl.py	Fri Jul 05 18:05:29 2013 -1000
+++ b/Lib/test/test_ssl.py	Sun Jul 07 15:47:45 2013 +0200
@@ -2311,6 +2311,21 @@
             self.assertEqual(cm.exception.reason, 'TLSV1_ALERT_INTERNAL_ERROR')
             self.assertIn("TypeError", stderr.getvalue())
 
+        def test_read_write_after_close_raises_valuerror(self):
+            context = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
+            context.verify_mode = ssl.CERT_REQUIRED
+            context.load_verify_locations(CERTFILE)
+            context.load_cert_chain(CERTFILE)
+            server = ThreadedEchoServer(context=context, chatty=False)
+
+            with server:
+                s = context.wrap_socket(socket.socket())
+                s.connect((HOST, server.port))
+                s.close()
+
+                self.assertRaises(ValueError, s.read, 1024)
+                self.assertRaises(ValueError, s.write, 'hello')
+
 
 def test_main(verbose=False):
     if support.verbose: