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=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 B69C6C49ED7 for ; Fri, 20 Sep 2019 07:36:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 84936208C3 for ; Fri, 20 Sep 2019 07:36:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568964982; bh=nzhgttOSPXQ3oeiv/D97eXaK7/HXlb3JCh5T8wct42w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1Jax/t6c7iJ/mLUbEtu4/A/XbIks/jwEPlkJh3XINKboc93ny6JVYkEHkKynlSbR4 Uy892L7vckwkBtUUtYP5oEGtkXzH7qjNzj/L9TKh7jAOZy3/A/opHAs/l0bMaeDCiF qu1j33dEIwD51RYrciORF09vlVXsKhUWLjQqtOko= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437521AbfITHgV (ORCPT ); Fri, 20 Sep 2019 03:36:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:58806 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2437511AbfITHgV (ORCPT ); Fri, 20 Sep 2019 03:36:21 -0400 Received: from localhost (unknown [89.205.140.247]) (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 D41C0208C0; Fri, 20 Sep 2019 07:36:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568964980; bh=nzhgttOSPXQ3oeiv/D97eXaK7/HXlb3JCh5T8wct42w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HkoYZGnylmfdHl6aw4A6Rac9rbHWS7Ac039nZ2OWGrL2kkr7vj3+2FmbkAPAAiHhi mMfpC3449C0RkwuQTIPE3LexA8j92ZQ9sSR3BM3FZxBztsVnuIKg1InwsUhxlhmo84 lPIoJDuwuhyCIL6eryaGqXqcHrJ24oFALpsc9wSU= From: Greg Kroah-Hartman To: netdev@vger.kernel.org Cc: isdn@linux-pingi.de, jreuter@yaina.de, ralf@linux-mips.org, alex.aring@gmail.com, stefan@datenfreihafen.org, orinimron123@gmail.com, Greg Kroah-Hartman Subject: [PATCH 5/5] nfc: enforce CAP_NET_RAW for raw sockets Date: Fri, 20 Sep 2019 09:35:49 +0200 Message-Id: <20190920073549.517481-6-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190920073549.517481-1-gregkh@linuxfoundation.org> References: <20190920073549.517481-1-gregkh@linuxfoundation.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ori Nimron When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first. Signed-off-by: Ori Nimron Signed-off-by: Greg Kroah-Hartman --- net/nfc/llcp_sock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c index 9b8742947aff..8dfea26536c9 100644 --- a/net/nfc/llcp_sock.c +++ b/net/nfc/llcp_sock.c @@ -1004,10 +1004,13 @@ static int llcp_sock_create(struct net *net, struct socket *sock, 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 = &llcp_rawsock_ops; - else + } else { sock->ops = &llcp_sock_ops; + } sk = nfc_llcp_sock_alloc(sock, sock->type, GFP_ATOMIC, kern); if (sk == NULL) -- 2.23.0