From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4E51C282C5 for ; Thu, 24 Jan 2019 19:23:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7313F218D2 for ; Thu, 24 Jan 2019 19:23:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548357837; bh=Ne2G34osE46w3sZtLiGkHa1sN9665fUyXn460EEMUUY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UQS/XMfR2OB4roiLyjdogG+bQeFHnmLm56tuPWz3+KkArL59jezYGh8R6Pj3Ibgks 0z+8v8TXirQVrkgq1pWCbX4pFoYdHro5jEuhDl0EMCp24ytXWpbmeqY1pt4UrK2vs8 Ap3BiEPhKOamGnGQ3Xx/ID3OJ5KIfr+jY76Ig5LE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729965AbfAXTX4 (ORCPT ); Thu, 24 Jan 2019 14:23:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:48908 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729943AbfAXTXx (ORCPT ); Thu, 24 Jan 2019 14:23:53 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E715F217D4; Thu, 24 Jan 2019 19:23:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548357832; bh=Ne2G34osE46w3sZtLiGkHa1sN9665fUyXn460EEMUUY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DgaTMr2nNS0XVqPxZNgZno+ylqW1tUUeIR/iwgSq6aBIpo9RGmqnG70ah1ScBY6Hn qpc5ZhpvqSq1xlhjFuOMmN+C+1HATbG9KlBKW9MNwgRiRnSABmnriHKTQHRVtFtdN0 PJ9lR1+Usg1JTtT/p3HYCT7uTuhEWYMhQksuKDcM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexander Potapenko , Xin Long , syzbot+ae0c70c0c2d40c51bb92@syzkaller.appspotmail.com, Marcelo Ricardo Leitner , Neil Horman , "David S. Miller" Subject: [PATCH 3.18 30/52] sctp: allocate sctp_sockaddr_entry with kzalloc Date: Thu, 24 Jan 2019 20:19:54 +0100 Message-Id: <20190124190147.565784191@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190124190140.879495253@linuxfoundation.org> References: <20190124190140.879495253@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xin Long commit 400b8b9a2a17918f8ce00786f596f530e7f30d50 upstream. The similar issue as fixed in Commit 4a2eb0c37b47 ("sctp: initialize sin6_flowinfo for ipv6 addrs in sctp_inet6addr_event") also exists in sctp_inetaddr_event, as Alexander noticed. To fix it, allocate sctp_sockaddr_entry with kzalloc for both sctp ipv4 and ipv6 addresses, as does in sctp_v4/6_copy_addrlist(). Reported-by: Alexander Potapenko Signed-off-by: Xin Long Reported-by: syzbot+ae0c70c0c2d40c51bb92@syzkaller.appspotmail.com Acked-by: Marcelo Ricardo Leitner Acked-by: Neil Horman Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/sctp/ipv6.c | 5 +---- net/sctp/protocol.c | 4 +--- 2 files changed, 2 insertions(+), 7 deletions(-) --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -97,11 +97,9 @@ static int sctp_inet6addr_event(struct n switch (ev) { case NETDEV_UP: - addr = kmalloc(sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC); + addr = kzalloc(sizeof(*addr), GFP_ATOMIC); if (addr) { addr->a.v6.sin6_family = AF_INET6; - addr->a.v6.sin6_port = 0; - addr->a.v6.sin6_flowinfo = 0; addr->a.v6.sin6_addr = ifa->addr; addr->a.v6.sin6_scope_id = ifa->idev->dev->ifindex; addr->valid = 1; @@ -411,7 +409,6 @@ static void sctp_v6_copy_addrlist(struct addr = kzalloc(sizeof(*addr), GFP_ATOMIC); if (addr) { addr->a.v6.sin6_family = AF_INET6; - addr->a.v6.sin6_port = 0; addr->a.v6.sin6_addr = ifp->addr; addr->a.v6.sin6_scope_id = dev->ifindex; addr->valid = 1; --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -149,7 +149,6 @@ static void sctp_v4_copy_addrlist(struct addr = kzalloc(sizeof(*addr), GFP_ATOMIC); if (addr) { addr->a.v4.sin_family = AF_INET; - addr->a.v4.sin_port = 0; addr->a.v4.sin_addr.s_addr = ifa->ifa_local; addr->valid = 1; INIT_LIST_HEAD(&addr->list); @@ -755,10 +754,9 @@ static int sctp_inetaddr_event(struct no switch (ev) { case NETDEV_UP: - addr = kmalloc(sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC); + addr = kzalloc(sizeof(*addr), GFP_ATOMIC); if (addr) { addr->a.v4.sin_family = AF_INET; - addr->a.v4.sin_port = 0; addr->a.v4.sin_addr.s_addr = ifa->ifa_local; addr->valid = 1; spin_lock_bh(&net->sctp.local_addr_lock);