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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 D95C1C432C0 for ; Fri, 22 Nov 2019 06:05:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A31CC2070A for ; Fri, 22 Nov 2019 06:05:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574402721; bh=oqoXrjybaQcbpavSA2Ct70GdEPmxLqSSsipp5kfREaw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ODkwP30W6hYGhhPDDU7MFlsp974kzNY4lJwiYs4NyuPjglHVPLxQ+tqiIL18/Fwu9 xKDEKLn3R03Emr1ghZJZ68Y3a+9bLKADd4r3n9NhF5w7ORTN9B2t28b+70YaOd/16o nVRI/7gqu4D0xiYsuH4Wd5/MUSNxzbYe1ci5Wb0w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728769AbfKVGFH (ORCPT ); Fri, 22 Nov 2019 01:05:07 -0500 Received: from mail.kernel.org ([198.145.29.99]:41472 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728903AbfKVGCm (ORCPT ); Fri, 22 Nov 2019 01:02:42 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C73A420659; Fri, 22 Nov 2019 06:02:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574402561; bh=oqoXrjybaQcbpavSA2Ct70GdEPmxLqSSsipp5kfREaw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0Sn/gB1PtsODzNjFHv/aR0brefRinnpV9WDI1iZ4L2/O2iN55dFFQi0UnORvcBk4F JfJIj0kE3ElvCnDre5vKJdd+NEPjuZ0zhcpYzGsEPg9V1I55azflOuP3dvwBDWy1GM L2Lbr/WXiYASMcVcj6dlLvnodPLuLov9lSb2eqpE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kangjie Lu , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net Subject: [PATCH AUTOSEL 4.9 66/91] tipc: fix a missing check of genlmsg_put Date: Fri, 22 Nov 2019 01:01:04 -0500 Message-Id: <20191122060129.4239-65-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191122060129.4239-1-sashal@kernel.org> References: <20191122060129.4239-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Kangjie Lu [ Upstream commit 46273cf7e009231d2b6bc10a926e82b8928a9fb2 ] genlmsg_put could fail. The fix inserts a check of its return value, and if it fails, returns -EMSGSIZE. Signed-off-by: Kangjie Lu Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/tipc/netlink_compat.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c index 63a913b238735..454ed8ea194c8 100644 --- a/net/tipc/netlink_compat.c +++ b/net/tipc/netlink_compat.c @@ -974,6 +974,8 @@ static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock) hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI, TIPC_NL_PUBL_GET); + if (!hdr) + return -EMSGSIZE; nest = nla_nest_start(args, TIPC_NLA_SOCK); if (!nest) { -- 2.20.1