diff options
| author | Oliver Neukum <oliver@neukum.org> | 2007-12-20 11:23:03 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-02-01 22:34:58 (GMT) |
| commit | e58679805dab3fb75df88141d9d869904a93337f (patch) | |
| tree | d14ba8ad0f78b026d452b5f05bc6d54aff4deb87 /drivers/usb/serial | |
| parent | e7b13ec9235b9fded90f826ceeb8c34548631351 (diff) | |
| download | linux-e58679805dab3fb75df88141d9d869904a93337f.tar.xz | |
USB: fix NULL pointer dereference on drivers/usb/serial/whiteheat.c
Am Sonntag, 16. Dezember 2007 05:23:47 schrieb Andrew Morton:
> On Sat, 15 Dec 2007 07:08:52 -0800 (PST) bugme-daemon@bugzilla.kernel.org wrote:
>
> > http://bugzilla.kernel.org/show_bug.cgi?id=9573
> > There's a null pointer dereference on drivers/usb/serial/whiteheat.c as
> > follows:
> >
> > (1) line 613: the test "if (port->tty)" implies that null is a legal value
> > for "port->tty" at that point
> >
> > (2) neither firm_open nor firm_purge initialize "port->tty"
drivers/usb/serial/usb-serial::serial_open() sets port->tty
The check for NULL is bogus. This patch removes the check.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial')
| -rw-r--r-- | drivers/usb/serial/whiteheat.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index ee5dd8b..f5033d4 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -610,8 +610,7 @@ static int whiteheat_open (struct usb_serial_port *port, struct file *filp) if (retval) goto exit; - if (port->tty) - port->tty->low_latency = 1; + port->tty->low_latency = 1; /* send an open port command */ retval = firm_open(port); |