--- misc/mythes-1.2.0/mythes.cxx	2010-02-27 16:52:52.000000000 +0100
+++ misc/build/mythes-1.2.0/mythes.cxx	2011-05-18 16:22:49.125014204 +0200
@@ -4,6 +4,8 @@
 #include <stdlib.h>
 #include <errno.h>
 
+#include <limits>
+
 #include "mythes.hxx"
 
 // some basic utility routines
@@ -204,6 +206,12 @@
          return 0;
     }          
     int nmeanings = atoi(buf+np+1);
+    if ((nmeanings < 0) ||
+        ((::std::numeric_limits<size_t>::max() / sizeof(mentry)) < nmeanings))
+    {
+        free(buf);
+        return 0;
+    }
     *pme = (mentry*) malloc( nmeanings * sizeof(mentry) );
     if (!(*pme)) {
         free(buf);