diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2011-02-28 10:34:06 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-21 12:45:39 -0700 |
| commit | 87ddb1aae235017a3d244a87cc45655a7a724755 (patch) | |
| tree | 184e4a16a8b9fef6e13290456d567cf24c69e27a | |
| parent | 1fdde2920cdf3926e64d4973bfc4d326d99e7079 (diff) | |
USB: serial/kobil_sct, fix potential tty NULL dereference
commit 6960f40a954619857e7095a6179eef896f297077 upstream.
Make sure that we check the return value of tty_port_tty_get.
Sometimes it may return NULL and we later dereference that.
The only place here is in kobil_read_int_callback, so fix it.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/serial/kobil_sct.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 9d99e682f96..929ceb11179 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -372,7 +372,7 @@ static void kobil_read_int_callback(struct urb *urb) } tty = tty_port_tty_get(&port->port); - if (urb->actual_length) { + if (tty && urb->actual_length) { /* BEGIN DEBUG */ /* |