From 61598093bbdd283a7edc367d900f223070ead8d2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:03 +0000
Subject: [PATCH] add ax88772C AX88772C_eeprom_tools

---
 kernel/net/dccp/ipv4.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/kernel/net/dccp/ipv4.c b/kernel/net/dccp/ipv4.c
index a2a8b95..f2a0a4e 100644
--- a/kernel/net/dccp/ipv4.c
+++ b/kernel/net/dccp/ipv4.c
@@ -243,12 +243,12 @@
 	int err;
 	struct net *net = dev_net(skb->dev);
 
-	/* Only need dccph_dport & dccph_sport which are the first
-	 * 4 bytes in dccp header.
-	 * Our caller (icmp_socket_deliver()) already pulled 8 bytes for us.
-	 */
-	BUILD_BUG_ON(offsetofend(struct dccp_hdr, dccph_sport) > 8);
-	BUILD_BUG_ON(offsetofend(struct dccp_hdr, dccph_dport) > 8);
+	if (!pskb_may_pull(skb, offset + sizeof(*dh)))
+		return -EINVAL;
+	dh = (struct dccp_hdr *)(skb->data + offset);
+	if (!pskb_may_pull(skb, offset + __dccp_basic_hdr_len(dh)))
+		return -EINVAL;
+	iph = (struct iphdr *)skb->data;
 	dh = (struct dccp_hdr *)(skb->data + offset);
 
 	sk = __inet_lookup_established(net, &dccp_hashinfo,

--
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