diff options
| author | Stefano Garzarella <sgarzare@redhat.com> | 2019-12-06 15:39:12 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-04 19:19:18 +0100 |
| commit | bb9aab7844fc59d6ec6ebcc9ca9362946f36a095 (patch) | |
| tree | 5ca6bf74e23bc3ff5b141234df902cf22b098bb3 /drivers/vhost | |
| parent | 252ac779a46de92f0e695267feca35443d566594 (diff) | |
vhost/vsock: accept only packets with the right dst_cid
[ Upstream commit 8a3cc29c316c17de590e3ff8b59f3d6cbfd37b0a ]
When we receive a new packet from the guest, we check if the
src_cid is correct, but we forgot to check the dst_cid.
The host should accept only packets where dst_cid is
equal to the host CID.
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/vhost')
| -rw-r--r-- | drivers/vhost/vsock.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index 9f57736fe15e..88a5aa6624b4 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -437,7 +437,9 @@ static void vhost_vsock_handle_tx_kick(struct vhost_work *work) virtio_transport_deliver_tap_pkt(pkt); /* Only accept correctly addressed packets */ - if (le64_to_cpu(pkt->hdr.src_cid) == vsock->guest_cid) + if (le64_to_cpu(pkt->hdr.src_cid) == vsock->guest_cid && + le64_to_cpu(pkt->hdr.dst_cid) == + vhost_transport_get_local_cid()) virtio_transport_recv_pkt(pkt); else virtio_transport_free_pkt(pkt); |