From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 224E81B439; Fri, 4 Jan 2019 05:09:21 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Jan 2019 20:09:21 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,437,1539673200"; d="scan'208";a="288727286" Received: from dpdk-tbie.sh.intel.com ([10.67.104.173]) by orsmga005.jf.intel.com with ESMTP; 03 Jan 2019 20:09:20 -0800 From: Tiwei Bie To: maxime.coquelin@redhat.com, zhihong.wang@intel.com, dev@dpdk.org Cc: stable@dpdk.org Date: Fri, 4 Jan 2019 12:06:40 +0800 Message-Id: <20190104040642.27463-5-tiwei.bie@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190104040642.27463-1-tiwei.bie@intel.com> References: <20190104040642.27463-1-tiwei.bie@intel.com> Subject: [dpdk-dev] [PATCH 4/6] vhost: fix possible out of bound access in vector filling X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jan 2019 04:09:22 -0000 Fixes: 7f74b95c444f ("vhost: pre update used ring for Tx and Rx") Cc: stable@dpdk.org Signed-off-by: Tiwei Bie --- lib/librte_vhost/virtio_net.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c index 474acf64d..d64c355b9 100644 --- a/lib/librte_vhost/virtio_net.c +++ b/lib/librte_vhost/virtio_net.c @@ -312,6 +312,9 @@ fill_vec_buf_split(struct virtio_net *dev, struct vhost_virtqueue *vq, struct vring_desc *descs = vq->desc; struct vring_desc *idesc = NULL; + if (unlikely(idx >= vq->size)) + return -1; + *desc_chain_head = idx; if (vq->desc[idx].flags & VRING_DESC_F_INDIRECT) { -- 2.17.1