From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Date: Wed, 22 Feb 2012 07:30:25 +0000 Subject: [patch] hso: memsetting wrong data in hso_get_count() Message-Id: <20120222073024.GA7389@elgon.mountain> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Jan Dumon Cc: Greg Kroah-Hartman , linux-usb@vger.kernel.org, netdev@vger.kernel.org, "David S. Miller" , kernel-janitors@vger.kernel.org The intent was to clear out the icount struct here, but we accidentally clear stack memory instead. It probably will lead to a NULL dereference right away. Signed-off-by: Dan Carpenter diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index 304fe78..e1324b4 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -1632,7 +1632,7 @@ static int hso_get_count(struct tty_struct *tty, struct hso_serial *serial = get_serial_by_tty(tty); struct hso_tiocmget *tiocmget = serial->tiocmget; - memset(&icount, 0, sizeof(struct serial_icounter_struct)); + memset(icount, 0, sizeof(struct serial_icounter_struct)); if (!tiocmget) return -ENOENT;