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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 52D27C10F14 for ; Thu, 3 Oct 2019 17:31:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1C59420830 for ; Thu, 3 Oct 2019 17:31:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570123905; bh=CMItQCuPfjOEoWVCOM6n45vcSofO9My2ipRACkBZkzg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vfnH0mOqOgIe2QAojPYDBP3DXT7Jq0kAW6wyvBmCg5BX22NWBONj0En57yy9xleBW AqGWKHzmifPGUA7yoHFz024+igD80jkcRqecj45GSqEh66rizZijPYdUU4cYBLiG8d qe1Q1FC1FqqccxuyCvjta3vJ3yFjwCn+4h85Dc9A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732606AbfJCRbn (ORCPT ); Thu, 3 Oct 2019 13:31:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:59012 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731763AbfJCQJ5 (ORCPT ); Thu, 3 Oct 2019 12:09:57 -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 73322207FF; Thu, 3 Oct 2019 16:09:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570118997; bh=CMItQCuPfjOEoWVCOM6n45vcSofO9My2ipRACkBZkzg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=epezVgE698r5HbtTdYNgMr3Io/m45a2gfYUcVvQTsEuiIW8d+NJsoL7msAarqN4zc jzK2kSuoEY4Vfrnd5/cN4738mdT8KIs575J2AGNuSGaIOqUAJSHtkJTYGxG6h9iTQM u0QMqXKwYJkG8slYOtwGCMQrpGFa02QFihUvdFUE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ori Nimron , "David S. Miller" Subject: [PATCH 4.14 048/185] mISDN: enforce CAP_NET_RAW for raw sockets Date: Thu, 3 Oct 2019 17:52:06 +0200 Message-Id: <20191003154448.670841995@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154437.541662648@linuxfoundation.org> References: <20191003154437.541662648@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: Ori Nimron [ Upstream commit b91ee4aa2a2199ba4d4650706c272985a5a32d80 ] When creating a raw AF_ISDN socket, CAP_NET_RAW needs to be checked first. Signed-off-by: Ori Nimron Signed-off-by: Greg Kroah-Hartman Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/isdn/mISDN/socket.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/isdn/mISDN/socket.c +++ b/drivers/isdn/mISDN/socket.c @@ -766,6 +766,8 @@ base_sock_create(struct net *net, struct if (sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; + if (!capable(CAP_NET_RAW)) + return -EPERM; sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern); if (!sk)