diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-07-04 12:48:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-17 11:37:53 +0200 |
| commit | 268476c9d3cbd9af1e879536e99a045301d7c83b (patch) | |
| tree | 4c204d4275d4ff654b37d37cfa23861d273688b1 | |
| parent | cac38ab7d4ff3b97eea76b7a59e22ced0dbb85a6 (diff) | |
xhci: xhci-mem: off by one in xhci_stream_id_to_ring()
commit 313db3d6488bb03b61b99de9dbca061f1fd838e1 upstream.
The > should be >= here so that we don't read one element beyond the end
of the ep->stream_info->stream_rings[] array.
Fixes: e9df17eb1408 ("USB: xhci: Correct assumptions about number of rings per endpoint.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 48bdab4fdc8f..7199e400fbac 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -650,7 +650,7 @@ struct xhci_ring *xhci_stream_id_to_ring( if (!ep->stream_info) return NULL; - if (stream_id > ep->stream_info->num_streams) + if (stream_id >= ep->stream_info->num_streams) return NULL; return ep->stream_info->stream_rings[stream_id]; } |