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| author | Vincent Whitchurch <vincent.whitchurch@axis.com> | 2021-07-01 14:46:52 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-03 11:09:27 +0300 |
| commit | 6c074eaaf7855dfee8faa8a093940fff5e779ec3 (patch) | |
| tree | 613f44d0dbc50a0bad2e6225a17e426f0d221a5f /drivers/virtio | |
| parent | 0698278e8eefb22660b6fa27b002b4232131c146 (diff) | |
| download | linux-6c074eaaf7855dfee8faa8a093940fff5e779ec3.tar.xz | |
virtio_vdpa: reject invalid vq indices
[ Upstream commit cb5d2c1f6cc0e5769099a7d44b9d08cf58cae206 ]
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@axis.com>
Link: https://lore.kernel.org/r/20210701114652.21956-1-vincent.whitchurch@axis.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_vdpa.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c index 4a9ddb44b2a7..3f95dedccceb 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); |