4.9-stable review patch. If anyone has any objections, please let me know.
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From: Dan Carpenter dan.carpenter@oracle.com
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
--- drivers/usb/host/xhci-mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- 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]; }