virtio-net: Add validation for used length
authorXie Yongji <xieyongji@bytedance.com>
Mon, 31 May 2021 13:58:52 +0000 (21:58 +0800)
committerJakub Kicinski <kuba@kernel.org>
Tue, 1 Jun 2021 04:53:36 +0000 (21:53 -0700)
commitad993a95c508417acdeb15244109e009e50d8758
tree5775a9c164277c4fce5741a76638502413d58388
parente099f3e8b71c212779089429a105b16d51ff6d58
virtio-net: Add validation for used length

This adds validation for used length (might come
from an untrusted device) to avoid data corruption
or loss.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210531135852.113-1-xieyongji@bytedance.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/virtio_net.c