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=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 CBF0FC433E1 for ; Thu, 20 Aug 2020 10:23:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A276D2072D for ; Thu, 20 Aug 2020 10:23:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597918999; bh=qrdaKOIVavS/UpsqEh0jTdT1tTtGvj0c6xdHIGU2Kmw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=I6+U1NTIPREq/zmN+r72vIOrsz42dsbWVTx74ErF6JD0WPYqwJdHEfW5Gdwttiav/ F7XraL6lNKT3i/2xxXQRC+5Q9TAwdA/ZyfopV60v2OpEubxKNdwyE+m5JBA9bfnV4Q BgYxEVtXUvwv4G75LvephX4HUGmFE7WxJRSySHRI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731328AbgHTKXR (ORCPT ); Thu, 20 Aug 2020 06:23:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:51274 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731622AbgHTKWu (ORCPT ); Thu, 20 Aug 2020 06:22:50 -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 0EF8120658; Thu, 20 Aug 2020 10:22:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597918969; bh=qrdaKOIVavS/UpsqEh0jTdT1tTtGvj0c6xdHIGU2Kmw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yIWaHOrPh+nrsXf7vd9fVCULOLtaibLi+WMEqQaPVHISb4Ur71OzmQogYk/WFO+Et NCQVVXexyobDJ8nPb/FUNDxD9fEWl0BH9fWEfAVrgXyP9yfq0BYxi84wJqXZQLMIQ3 fTt8sBh56oegdWxlvcfiJsvxHcJ2cxZupju4z8Xk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Qingyu Li , "David S. Miller" Subject: [PATCH 4.4 105/149] net/nfc/rawsock.c: add CAP_NET_RAW check. Date: Thu, 20 Aug 2020 11:23:02 +0200 Message-Id: <20200820092130.790628276@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820092125.688850368@linuxfoundation.org> References: <20200820092125.688850368@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 From: Qingyu Li [ Upstream commit 26896f01467a28651f7a536143fe5ac8449d4041 ] When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first. Signed-off-by: Qingyu Li Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/nfc/rawsock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -344,10 +344,13 @@ static int rawsock_create(struct net *ne if ((sock->type != SOCK_SEQPACKET) && (sock->type != SOCK_RAW)) return -ESOCKTNOSUPPORT; - if (sock->type == SOCK_RAW) + if (sock->type == SOCK_RAW) { + if (!capable(CAP_NET_RAW)) + return -EPERM; sock->ops = &rawsock_raw_ops; - else + } else { sock->ops = &rawsock_ops; + } sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto, kern); if (!sk)