netdev - [PATCH v2] net/usb: kalmia: Fix uninit-value in kalmia_send_init

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Message-ID: <f0b62f38c042d2dcb8b8e83c827d76db2ac5d7ad.camel@gmail.com>
Date:   Tue, 31 Jan 2023 15:20:33 +0100
From:   Miko Larsson <mikoxyzzz@...il.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-usb@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Greg KH <gregkh@...uxfoundation.org>
Subject: [PATCH v2] net/usb: kalmia: Fix uninit-value in
 kalmia_send_init_packet

syzbot reports that act_len in kalmia_send_init_packet() is
uninitialized. Fix this by initializing it to 0.

Fixes: d40261236e8e ("net/usb: Add Samsung Kalmia driver for Samsung GT-B3730")
Reported-and-tested-by: syzbot+cd80c5ef5121bfe85b55@...kaller.appspotmail.com
Signed-off-by: Miko Larsson <mikoxyzzz@...il.com>
---
v1 -> v2
* Minor alteration of commit message.
* Added 'reported-and-tested-by' which is attributed to syzbot.

 drivers/net/usb/kalmia.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/kalmia.c b/drivers/net/usb/kalmia.c
index 9f2b70ef39aa..b158fb7bf66a 100644
--- a/drivers/net/usb/kalmia.c
+++ b/drivers/net/usb/kalmia.c
@@ -56,7 +56,7 @@ static int
 kalmia_send_init_packet(struct usbnet *dev, u8 *init_msg, u8 init_msg_len,
 	u8 *buffer, u8 expected_len)
 {
-	int act_len;
+	int act_len = 0;
 	int status;
 
 	netdev_dbg(dev->net, "Sending init packet");
-- 
2.39.1