Fix CVE-2011-2918
    
    The full upstream fix is a8b0ca17b80e92faab46ee7179ba9e99ccb61233, however that
    doesn't apply cleanly at all to 2.6.35.14.  A smaller patch was sent to stable
    for 3.0.4, which is commit 462fee3af72df0de7b60b96c525ffe8baf4db0f0.  That was
    the basis used for this patch.