From: Tiwei Bie <tiwei.bie@intel.com>
To: maxime.coquelin@redhat.com, zhihong.wang@intel.com, dev@dpdk.org
Cc: stable@dpdk.org
Subject: [dpdk-dev] [PATCH 4/6] vhost: fix possible out of bound access in vector filling
Date: Fri, 4 Jan 2019 12:06:40 +0800 [thread overview]
Message-ID: <20190104040642.27463-5-tiwei.bie@intel.com> (raw)
In-Reply-To: <20190104040642.27463-1-tiwei.bie@intel.com>
Fixes: 7f74b95c444f ("vhost: pre update used ring for Tx and Rx")
Cc: stable@dpdk.org
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
---
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
next prev parent reply other threads:[~2019-01-04 4:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-04 4:06 [dpdk-dev] [PATCH 0/6] Some fixes for vhost Tiwei Bie
2019-01-04 4:06 ` [dpdk-dev] [PATCH 1/6] vhost: fix desc access in relay helpers Tiwei Bie
2019-01-04 8:16 ` Maxime Coquelin
2019-01-04 4:06 ` [dpdk-dev] [PATCH 2/6] vhost: fix possible out of bound " Tiwei Bie
2019-01-04 8:39 ` Maxime Coquelin
2019-01-04 4:06 ` [dpdk-dev] [PATCH 3/6] vhost: fix possible dead loop " Tiwei Bie
2019-01-04 8:40 ` Maxime Coquelin
2019-01-04 4:06 ` Tiwei Bie [this message]
2019-01-04 8:46 ` [dpdk-dev] [PATCH 4/6] vhost: fix possible out of bound access in vector filling Maxime Coquelin
2019-01-04 4:06 ` [dpdk-dev] [PATCH 5/6] vhost: fix possible dead loop " Tiwei Bie
2019-01-04 8:46 ` Maxime Coquelin
2019-01-04 4:06 ` [dpdk-dev] [PATCH 6/6] vhost: ensure event idx is mapped when negotiated Tiwei Bie
2019-01-04 8:47 ` Maxime Coquelin
2019-01-04 18:00 ` [dpdk-dev] [PATCH 0/6] Some fixes for vhost Maxime Coquelin
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