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 11:31:43 +0200 |
| commit | 3cd94f78ef738557145e4fdb07c41efed7a8792c (patch) | |
| tree | 90468ff4968f2dd390a07b14fe70c0cd2c7e58b3 /drivers/usb/host/xhci-mem.c | |
| parent | 7f873c236d61ec9e41df12b7544c7f5562c25165 (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>
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
| -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 e4cf3322bcb3..0ec809a35a3f 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -638,7 +638,7 @@ 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]; } |