From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM

---
 kernel/drivers/net/usb/sr9700.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/drivers/net/usb/sr9700.c b/kernel/drivers/net/usb/sr9700.c
index fce6713..811c875 100644
--- a/kernel/drivers/net/usb/sr9700.c
+++ b/kernel/drivers/net/usb/sr9700.c
@@ -410,7 +410,7 @@
 		/* ignore the CRC length */
 		len = (skb->data[1] | (skb->data[2] << 8)) - 4;
 
-		if (len > ETH_FRAME_LEN || len > skb->len)
+		if (len > ETH_FRAME_LEN || len > skb->len || len < 0)
 			return 0;
 
 		/* the last packet of current skb */

--
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