Do not call vDPA drivers' callbacks with vq indicies larger than what the drivers indicate that they support. vDPA drivers do not bounds check the indices. Signed-off-by: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx> --- drivers/virtio/virtio_vdpa.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c index e28acf482e0c..e9b9dd03f44a 100644 --- a/drivers/virtio/virtio_vdpa.c +++ b/drivers/virtio/virtio_vdpa.c @@ -149,6 +149,9 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, if (!name) return NULL; + if (index >= vdpa->nvqs) + return ERR_PTR(-ENOENT); + /* Queue shouldn't already be set up. */ if (ops->get_vq_ready(vdpa, index)) return ERR_PTR(-ENOENT); -- 2.28.0 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
