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 B617DC43215 for ; Fri, 22 Nov 2019 06:22:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8B5532070E for ; Fri, 22 Nov 2019 06:22:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574403748; bh=pkcgl8GLrGanjEtXFJT5zlPNjUrk/9i/0wS56xwsYuk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=YySomKIw151EEjA9d1JOC6yY5rnp61+IrWGQDJ50gtINHS++NH8HZl1LdU9+uf1uK ywg7KaqA45hpCiNnMR3Is8nT73qB9kiMWdriS84havk4MYJYDvssmIBXyOYAtcss1l 4zHdqFXEwk1O4xJOSz5c+c8/ryltc+SLgcPjmy7w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728372AbfKVGWZ (ORCPT ); Fri, 22 Nov 2019 01:22:25 -0500 Received: from mail.kernel.org ([198.145.29.99]:57336 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728364AbfKVFv7 (ORCPT ); Fri, 22 Nov 2019 00:51:59 -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 86A8820726; Fri, 22 Nov 2019 05:51:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574401919; bh=pkcgl8GLrGanjEtXFJT5zlPNjUrk/9i/0wS56xwsYuk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o0GwlbDWFA0i6ykjPYkGxPjt4CSh6SRn0vtIzhMou14jMP+sceUrogP9ttqpuLIPc Y1qrw/FjssGJx/OqUL1O6ih+ViIS6f6u3AlyrjR+bn9wBteCvuMwsQMhdsj9+xUzSL hkzJ6tlY6AHMSh3LTvYMND+29yTYs9vUfPLs0PA8= 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 4.19 149/219] tipc: fix a missing check of genlmsg_put Date: Fri, 22 Nov 2019 00:48:01 -0500 Message-Id: <20191122054911.1750-142-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191122054911.1750-1-sashal@kernel.org> References: <20191122054911.1750-1-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 6494d6b5e1b24..fab0384d2b4b3 100644 --- a/net/tipc/netlink_compat.c +++ b/net/tipc/netlink_compat.c @@ -983,6 +983,8 @@ 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