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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 5F470C76186 for ; Wed, 24 Jul 2019 19:34:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 333652238C for ; Wed, 24 Jul 2019 19:34:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563996849; bh=Jp7I9JI9gHKzOWH5RRf8+aoRdq0+E3CVjbZ3MX7sVLQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Wd/WlevRItUAuCr1zsxzI3vmrPGYKfdTNKoJibHDJdOk7CLIwel/1xW2+SvZcTyfr 0Xb+pGhBcW268iiiMJkTELv0yZO6InxwQBAzPGt8w9RHS+TZMeB3/bKyfxjU9W+T03 3iOz8U1z/wSbW8AM1MpaSohMEFaX3ALpHTcpNJcA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389059AbfGXTeH (ORCPT ); Wed, 24 Jul 2019 15:34:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:56246 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389042AbfGXTeD (ORCPT ); Wed, 24 Jul 2019 15:34:03 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 055B42238C; Wed, 24 Jul 2019 19:34:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563996843; bh=Jp7I9JI9gHKzOWH5RRf8+aoRdq0+E3CVjbZ3MX7sVLQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2aJecCK6a/Q89sK5vhv2ENUSeh3Z3ZjImUBz8E4kTVYdbPx31FcDZC725r52Gpf8G eqlgLoMxTDMa4V2BwlO6wGDWWZPaoPIJZ/XFeti1lO+rUReIWycKFUbe2OvrWrIrF0 IjmXjQACqt0SRTQvZUouYM46kLuGvxyI0YF8jplU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Taehee Yoo , "David S. Miller" , Sasha Levin Subject: [PATCH 5.2 236/413] gtp: add missing gtp_encap_disable_sock() in gtp_encap_enable() Date: Wed, 24 Jul 2019 21:18:47 +0200 Message-Id: <20190724191752.167045447@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190724191735.096702571@linuxfoundation.org> References: <20190724191735.096702571@linuxfoundation.org> User-Agent: quilt/0.66 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 [ Upstream commit e30155fd23c9c141cbe7d99b786e10a83a328837 ] If an invalid role is sent from user space, gtp_encap_enable() will fail. Then, it should call gtp_encap_disable_sock() but current code doesn't. It makes memory leak. Fixes: 91ed81f9abc7 ("gtp: support SGSN-side tunnels") Signed-off-by: Taehee Yoo Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/gtp.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index fc45b749db46..01fc51892e48 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -843,8 +843,13 @@ static int gtp_encap_enable(struct gtp_dev *gtp, struct nlattr *data[]) if (data[IFLA_GTP_ROLE]) { role = nla_get_u32(data[IFLA_GTP_ROLE]); - if (role > GTP_ROLE_SGSN) + if (role > GTP_ROLE_SGSN) { + if (sk0) + gtp_encap_disable_sock(sk0); + if (sk1u) + gtp_encap_disable_sock(sk1u); return -EINVAL; + } } gtp->sk0 = sk0; -- 2.20.1