From 3789fee8a8bd9ff992ff460466ffd7384528bdd7 Mon Sep 17 00:00:00 2001
From: Daniele Palmas <dnlplm@gmail.com>
Date: Thu, 1 Aug 2024 15:55:12 +0200
Subject: [PATCH] net: usb: qmi_wwan: fix memory leak for not ip packets
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[ Upstream commit 7ab107544b777c3bd7feb9fe447367d8edd5b202 ]

Free the unused skb when not ip packets arrive.

Fixes: c6adf77953bc ("net: usb: qmi_wwan: add qmap mux protocol support")
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/qmi_wwan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index d2a8238e1..47cc54a64 100755
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -216,6 +216,7 @@ static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 			break;
 		default:
 			/* not ip - do not know what to do */
+			kfree_skb(skbn);
 			goto skip;
 		}