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=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 73870C11D3D for ; Thu, 27 Feb 2020 17:08:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5444924697 for ; Thu, 27 Feb 2020 17:08:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729940AbgB0RIb (ORCPT ); Thu, 27 Feb 2020 12:08:31 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:57486 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729863AbgB0RIa (ORCPT ); Thu, 27 Feb 2020 12:08:30 -0500 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01RH6ILK008012 for ; Thu, 27 Feb 2020 12:08:29 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2ydq6jgtbs-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 27 Feb 2020 12:08:29 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 27 Feb 2020 17:08:27 -0000 Received: from b06cxnps4075.portsmouth.uk.ibm.com (9.149.109.197) by e06smtp01.uk.ibm.com (192.168.101.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 27 Feb 2020 17:08:24 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01RH8Nx835913864 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 27 Feb 2020 17:08:23 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2C492A405F; Thu, 27 Feb 2020 17:08:23 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DE358A405C; Thu, 27 Feb 2020 17:08:22 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 27 Feb 2020 17:08:22 +0000 (GMT) From: Julian Wiedmann To: David Miller Cc: netdev , linux-s390 , Heiko Carstens , Ursula Braun , Julian Wiedmann Subject: [PATCH net-next 3/8] s390/qeth: validate device-provided MAC address Date: Thu, 27 Feb 2020 18:08:11 +0100 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200227170816.101286-1-jwi@linux.ibm.com> References: <20200227170816.101286-1-jwi@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 20022717-4275-0000-0000-000003A6144C X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20022717-4276-0000-0000-000038BA67A0 Message-Id: <20200227170816.101286-4-jwi@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-02-27_05:2020-02-26,2020-02-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 spamscore=0 impostorscore=0 suspectscore=0 bulkscore=0 mlxlogscore=847 clxscore=1015 priorityscore=1501 malwarescore=0 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002270126 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org It's good practice to not blindly trust what the HW offers. Signed-off-by: Julian Wiedmann Reviewed-by: Alexandra Winter --- drivers/s390/net/qeth_l3_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 667a10d6495d..1000e18c1090 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -920,6 +920,8 @@ static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, if (cmd->hdr.return_code) return -EIO; + if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr)) + return -EADDRNOTAVAIL; ether_addr_copy(card->dev->dev_addr, cmd->data.create_destroy_addr.mac_addr); -- 2.17.1