From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] sctp: potential read out of bounds in sctp_ulpevent_type_enabled() Date: Wed, 13 Sep 2017 09:25:22 -0700 (PDT) Message-ID: <20170913.092522.934509429497822082.davem@davemloft.net> References: <20170913092028.idzvduj7ran4li6b@mwanda> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: vyasevich@gmail.com, nhorman@tuxdriver.com, linux-sctp@vger.kernel.org, netdev@vger.kernel.org, kernel-janitors@vger.kernel.org To: dan.carpenter@oracle.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:51510 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751457AbdIMQZX (ORCPT ); Wed, 13 Sep 2017 12:25:23 -0400 In-Reply-To: <20170913092028.idzvduj7ran4li6b@mwanda> Sender: netdev-owner@vger.kernel.org List-ID: From: Dan Carpenter Date: Wed, 13 Sep 2017 12:20:28 +0300 > @@ -154,7 +154,11 @@ static inline int sctp_ulpevent_type_enabled(__u16 sn_type, > struct sctp_event_subscribe *mask) > { > char *amask = (char *) mask; > - return amask[sn_type - SCTP_SN_TYPE_BASE]; > + int offset = sn_type - SCTP_SN_TYPE_BASE; Please use reverse-christmas-tree local variable ordering. Thank you.