From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id C88E243277; Fri, 3 Nov 2023 08:41:19 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id D45DB42DB4; Fri, 3 Nov 2023 08:40:58 +0100 (CET) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by mails.dpdk.org (Postfix) with ESMTP id 5EA194067D for ; Fri, 3 Nov 2023 08:40:53 +0100 (CET) Received: from dggpeml100024.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4SMCHH41rvzPnhS; Fri, 3 Nov 2023 15:36:43 +0800 (CST) Received: from localhost.localdomain (10.50.165.33) by dggpeml100024.china.huawei.com (7.185.36.115) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Fri, 3 Nov 2023 15:40:50 +0800 From: Chengwen Feng To: , , Zyta Szpak , Liron Himi , Ferruh Yigit , Andrzej Ostruszka , Dmitri Epshtein , Yelena Krivosheev , Natalie Samsonov CC: , Subject: [PATCH v3 5/5] net/mvneta: fix possible out-of-bounds write Date: Fri, 3 Nov 2023 07:38:11 +0000 Message-ID: <20231103073811.13196-6-fengchengwen@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231103073811.13196-1-fengchengwen@huawei.com> References: <20230314124813.39521-1-fengchengwen@huawei.com> <20231103073811.13196-1-fengchengwen@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.50.165.33] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpeml100024.china.huawei.com (7.185.36.115) X-CFilter-Loop: Reflected X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org The mvneta_ifnames_get() function will save 'iface' value to ifnames, it will out-of-bounds write if passed many iface pairs (e.g. 'iface=xxx,iface=xxx,...'). Fixes: 4ccc8d770d3b ("net/mvneta: add PMD skeleton") Cc: stable@dpdk.org Signed-off-by: Chengwen Feng --- drivers/net/mvneta/mvneta_ethdev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c index daa69e533a..8032a712f4 100644 --- a/drivers/net/mvneta/mvneta_ethdev.c +++ b/drivers/net/mvneta/mvneta_ethdev.c @@ -91,6 +91,9 @@ mvneta_ifnames_get(const char *key __rte_unused, const char *value, { struct mvneta_ifnames *ifnames = extra_args; + if (ifnames->idx >= NETA_NUM_ETH_PPIO) + return -EINVAL; + ifnames->names[ifnames->idx++] = value; return 0; -- 2.17.1