linux-kernel - [PATCH AUTOSEL 4.19 096/209] USB: serial: cypress

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20191113015025.9685-96-sashal@kernel.org>
Date:   Tue, 12 Nov 2019 20:48:32 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Johan Hovold <johan@...nel.org>, Sasha Levin <sashal@...nel.org>,
        linux-usb@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 096/209] USB: serial: cypress_m8: fix interrupt-out transfer length

From: Johan Hovold <johan@...nel.org>

[ Upstream commit 56445eef55cb5904096fed7a73cf87b755dfffc7 ]

Fix interrupt-out transfer length which was being set to the
transfer-buffer length rather than the size of the outgoing packet.

Note that no slab data was leaked as the whole transfer buffer is always
cleared before each transfer.

Fixes: 9aa8dae7b1fa ("cypress_m8: use usb_fill_int_urb where appropriate")
Signed-off-by: Johan Hovold <johan@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/usb/serial/cypress_m8.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index e0035c0231202..2c58649fd47a4 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -769,7 +769,7 @@ static void cypress_send(struct usb_serial_port *port)
 
 	usb_fill_int_urb(port->interrupt_out_urb, port->serial->dev,
 		usb_sndintpipe(port->serial->dev, port->interrupt_out_endpointAddress),
-		port->interrupt_out_buffer, port->interrupt_out_size,
+		port->interrupt_out_buffer, actual_size,
 		cypress_write_int_callback, port, priv->write_urb_interval);
 	result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC);
 	if (result) {
-- 
2.20.1