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From: Miko Larsson <mikoxyzzz@gmail.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	linux-usb@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Greg KH <gregkh@linuxfoundation.org>
Subject: [PATCH v2] net/usb: kalmia: Fix uninit-value in kalmia_send_init_packet
Date: Tue, 31 Jan 2023 15:20:33 +0100	[thread overview]
Message-ID: <f0b62f38c042d2dcb8b8e83c827d76db2ac5d7ad.camel@gmail.com> (raw)
In-Reply-To: <7266fe67c835f90e5c257129014a63e79e849ef9.camel@gmail.com>

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@syzkaller.appspotmail.com
Signed-off-by: Miko Larsson <mikoxyzzz@gmail.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



  parent reply	other threads:[~2023-01-31 14:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-31 11:14 [UNTESTED PATCH] net/usb: kalmia: Fix uninit-value in kalmia_send_init_packet Miko Larsson
2023-01-31 11:37 ` Greg KH
2023-01-31 11:48   ` Miko Larsson
2023-01-31 14:20 ` Miko Larsson [this message]
2023-01-31 14:56   ` [PATCH v2] " Greg KH
2023-02-01 12:19   ` Jiri Pirko
2023-02-09 14:47     ` Miko Larsson
2023-02-09 15:12       ` Jiri Pirko
2023-02-10  8:13   ` [PATCH] net/usb: kalmia: Don't pass act_len in usb_bulk_msg error path Miko Larsson
2023-02-10 16:08     ` Alexander H Duyck
2023-02-13  9:50     ` patchwork-bot+netdevbpf

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