From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752385AbcFVJys (ORCPT ); Wed, 22 Jun 2016 05:54:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34949 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750957AbcFVJvP (ORCPT ); Wed, 22 Jun 2016 05:51:15 -0400 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH net-next 09/14] rxrpc: Validate the net address given to rxrpc_kernel_begin_call() From: David Howells To: davem@davemloft.net Cc: dhowells@redhat.com, netdev@vger.kernel.org, linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org Date: Wed, 22 Jun 2016 10:50:47 +0100 Message-ID: <146658904716.4550.5805807444765528663.stgit@warthog.procyon.org.uk> In-Reply-To: <146658898230.4550.7226255613607733759.stgit@warthog.procyon.org.uk> References: <146658898230.4550.7226255613607733759.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Wed, 22 Jun 2016 09:50:49 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Validate the net address given to rxrpc_kernel_begin_call() before using it. Whilst this should be mostly unnecessary for in-kernel users, it does clear the tail of the address struct in case we want to hash or compare the whole thing. Signed-off-by: David Howells --- net/rxrpc/af_rxrpc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c index 408bd024125b..b29bb50af5de 100644 --- a/net/rxrpc/af_rxrpc.c +++ b/net/rxrpc/af_rxrpc.c @@ -280,9 +280,14 @@ struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock, struct rxrpc_transport *trans; struct rxrpc_call *call; struct rxrpc_sock *rx = rxrpc_sk(sock->sk); + int ret; _enter(",,%x,%lx", key_serial(key), user_call_ID); + ret = rxrpc_validate_address(rx, srx, sizeof(*srx)); + if (ret < 0) + return ERR_PTR(ret); + lock_sock(&rx->sk); if (!key)