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/net/ipv6/exthdrs_core.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/net/ipv6/exthdrs_core.c b/kernel/net/ipv6/exthdrs_core.c
index da46c42..49e31e4 100644
--- a/kernel/net/ipv6/exthdrs_core.c
+++ b/kernel/net/ipv6/exthdrs_core.c
@@ -143,6 +143,8 @@
 			optlen = 1;
 			break;
 		default:
+			if (len < 2)
+				goto bad;
 			optlen = nh[offset + 1] + 2;
 			if (optlen > len)
 				goto bad;

--
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