From patchwork Tue Aug 18 07:56:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qingyu Li X-Patchwork-Id: 11720283 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 403BF1392 for ; Tue, 18 Aug 2020 07:57:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 209AC2067C for ; Tue, 18 Aug 2020 07:57:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="OnMPWYm8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726422AbgHRH4z (ORCPT ); Tue, 18 Aug 2020 03:56:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726043AbgHRH4y (ORCPT ); Tue, 18 Aug 2020 03:56:54 -0400 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 244BCC061389; Tue, 18 Aug 2020 00:56:54 -0700 (PDT) Received: by mail-pf1-x444.google.com with SMTP id y206so9548664pfb.10; Tue, 18 Aug 2020 00:56:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=0a8ZXLhEGMn1gXIxhyv1oqNmrc1yvciM66y5dEH31qA=; b=OnMPWYm8lscfbPQyj1djbb0PioZoTGd5x4JH/p04tOQzntO2w3QdMDxT4Vh3tE6Kpp JEfePTroeo3muKV9QU6EQicNZyKS1IUHCaxsGZAe6s8+MGYiA+oAiwz9p5ucVc5j8A/z +3JgFIXMFVippgcpe7Ab4SDXt3aYmlLU+u8nx7Tj+g/zovWtHaOEOv2YXc9//frymD1+ p7wAkJFfgHwjxsUzpHXxKKCDlPtBwf46S8k/8QxlMToSmWkj7plbCYY6hbGxptfuKAhv W8oZ/FBjzR/kmFc8lnUnnrfx2KykJWhD4fhHA9k7P0/9WEubGAoG2ln+MWK2q+39qh9A AM5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=0a8ZXLhEGMn1gXIxhyv1oqNmrc1yvciM66y5dEH31qA=; b=sHsvUjuY63MmHIX7X/Azg0PS78IiR2xjrBD9QZWaSaPs2aiuanzGhaT0ET4T3v22IT KGanZHJg/gmpXolC8mS9Sb5bexrqv4rmMz4rRVe2w+HoyCYC9/SnGqiiBZcQBix4zMqq 0FclGWM7BrlPxsgoxOt1KU5659vrFM5nJTJrHGwmO/7T/jQQpyj5Qrl3SHwex+11W/kc /KAAXfsoYaf6T8stoFWU0/NRn7zOi5kgMvPFJ9VeEM8Ok1YAxogG8eaHBDzdX3ox4Ts1 1j5Ak2p08Rq2UaFZlbp5eFX1WSSO8k+7MMuc5lu4GKTxOMdc8/8wucA5tKyHkKpmKjmL KnSw== X-Gm-Message-State: AOAM533EtORE7fQds3hELoSniNnfyMjPPy9QzCZdolVjoHbOCFh2SsQ1 Xfr1OSGFFP7mK39ASW2+Xic8kviWlMg= X-Google-Smtp-Source: ABdhPJwCldrcVcuZK3TXMeMsmX3YZ82dces6WA6CSG6z3pNHH/qbchCc3BqaDK6HrNnLWrmYWImFHg== X-Received: by 2002:aa7:99cc:: with SMTP id v12mr14322545pfi.255.1597737412978; Tue, 18 Aug 2020 00:56:52 -0700 (PDT) Received: from oppo (69-172-89-151.static.imsbiz.com. [69.172.89.151]) by smtp.gmail.com with ESMTPSA id r28sm23400867pfg.158.2020.08.18.00.56.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Aug 2020 00:56:51 -0700 (PDT) Date: Tue, 18 Aug 2020 15:56:48 +0800 From: Qingyu Li To: marcel@holtmann.org, johan.hedberg@gmail.com, davem@davemloft.net, kuba@kernel.org Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] net/bluetooth/hci_sock.c: add CAP_NET_RAW check. Message-ID: <20200818075648.GA29124@oppo> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org When creating a raw PF_BLUETOOTH socket, CAP_NET_RAW needs to be checked first. Signed-off-by: Qingyu Li --- net/bluetooth/hci_sock.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.17.1 diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 251b9128f530..c0919e209f05 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -2034,6 +2034,9 @@ static int hci_sock_create(struct net *net, struct socket *sock, int protocol, if (sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; + if (!capable(CAP_NET_RAW)) + return -EPERM; + sock->ops = &hci_sock_ops; sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto, kern);