static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx)
{
    VirtIONet *n = VIRTIO_NET(vdev);
    NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(idx));
    assert(n->vhost_started);
    return vhost_net_virtqueue_pending(tap_get_vhost_net(nc->peer), idx);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.