diff options
Diffstat (limited to 'drivers/virtio/virtio_rng.c')
| -rw-r--r-- | drivers/virtio/virtio_rng.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_rng.c b/drivers/virtio/virtio_rng.c index 9314c0a..b85545c 100644 --- a/drivers/virtio/virtio_rng.c +++ b/drivers/virtio/virtio_rng.c @@ -41,6 +41,9 @@ static int virtio_rng_read(struct udevice *dev, void *data, size_t len) while (!virtqueue_get_buf(priv->rng_vq, &rsize)) ; + if (rsize > sg.length) + return -EIO; + memcpy(ptr, buf, rsize); len -= rsize; ptr += rsize; |