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| author | Jiri Slaby <jslaby@suse.cz> | 2011-02-28 09:34:06 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-01 03:24:54 (GMT) |
| commit | 6960f40a954619857e7095a6179eef896f297077 (patch) | |
| tree | 57d7c5e0177399c5aa92bec9b1510dfcc6b2d684 | |
| parent | f7d7aedfcd4e20e7dfc7356d30cc22dc0b0f493e (diff) | |
| download | linux-6960f40a954619857e7095a6179eef896f297077.tar.xz | |
USB: serial/kobil_sct, fix potential tty NULL dereference
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>
Cc: stable@kernel.org
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 bd5bd85..b382d9a 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 */ /* |