From patchwork Mon Nov 23 12:21:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 331348 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, 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 2C384C64E7C for ; Mon, 23 Nov 2020 12:25:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB1252076E for ; Mon, 23 Nov 2020 12:25:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="qL//9yL0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729929AbgKWMZI (ORCPT ); Mon, 23 Nov 2020 07:25:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:34592 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729926AbgKWMZF (ORCPT ); Mon, 23 Nov 2020 07:25:05 -0500 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 2EE4820781; Mon, 23 Nov 2020 12:25:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1606134303; bh=/PwlTpAU5qAoLDl081SBW7xd/jTS7nlN9sZUV7cwFso=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qL//9yL0k0iEp0e2wuQHkylFlMtduLhPnTketQDM8ebrjL13unSzPw+8gAHNGjM5M LOO+iVLiejzrhG5mSSKs3JV722kLb0Y5+Z2dSgISAFZPNqLkbBahs/4/e0X+CZRNXI 3OaYuCp8IqpXSyLks+zgHdWXjRnU9R91VEzRO6hg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hulk Robot , Wang Hai , Jakub Kicinski Subject: [PATCH 4.9 05/47] inet_diag: Fix error path to cancel the meseage in inet_req_diag_fill() Date: Mon, 23 Nov 2020 13:21:51 +0100 Message-Id: <20201123121805.809486290@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201123121805.530891002@linuxfoundation.org> References: <20201123121805.530891002@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Wang Hai [ Upstream commit e33de7c5317e2827b2ba6fd120a505e9eb727b05 ] nlmsg_cancel() needs to be called in the error path of inet_req_diag_fill to cancel the message. Fixes: d545caca827b ("net: inet: diag: expose the socket mark to privileged processes.") Reported-by: Hulk Robot Signed-off-by: Wang Hai Link: https://lore.kernel.org/r/20201116082018.16496-1-wanghai38@huawei.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/ipv4/inet_diag.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -355,8 +355,10 @@ static int inet_req_diag_fill(struct soc r->idiag_inode = 0; if (net_admin && nla_put_u32(skb, INET_DIAG_MARK, - inet_rsk(reqsk)->ir_mark)) + inet_rsk(reqsk)->ir_mark)) { + nlmsg_cancel(skb, nlh); return -EMSGSIZE; + } nlmsg_end(skb, nlh); return 0;