diff -r e6358103fe4f Modules/socketmodule.c
--- a/Modules/socketmodule.c	Wed Jan 08 20:44:37 2014 -0800
+++ b/Modules/socketmodule.c	Sun Jan 12 13:21:19 2014 -0800
@@ -2877,6 +2877,14 @@
         recvlen = buflen;
     }
 
+    /* Check if the buffer is large enough */
+    if (buflen < recvlen) {
+        PyBuffer_Release(&pbuf);
+        PyErr_SetString(PyExc_ValueError,
+                        "buffer too small for requested bytes");
+        return NULL;
+    }
+
     readlen = sock_recvfrom_guts(s, buf, recvlen, flags, &addr);
     if (readlen < 0) {
         PyBuffer_Release(&pbuf);