Commit 15e5bee3 authored Mar 22, 2011 by Johan Hovold Committed by Greg Kroah-Hartman Mar 23, 2011

USB: cdc-acm: fix potential null-pointer dereference



Must check return value of tty_port_tty_get.

Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 23b80550

drivers/usb/class/cdc-acm.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -533,6 +533,8 @@ static void acm_softint(struct work_struct *work)
		if (!ACM_READY(acm))
		return;
		tty = tty_port_tty_get(&acm->port);
		if (!tty)
		return;
		tty_wakeup(tty);
		tty_kref_put(tty);
		}