Commit fc6fb41c authored by Li RongQing's avatar Li RongQing Committed by David S. Miller
Browse files

ipv6: fix a potential use after free in ip6_offload.c 



pskb_may_pull() maybe change skb->data and make opth pointer oboslete,
so set the opth again

Signed-off-by: default avatarLi RongQing <roy.qing.li@gmail.com>
Acked-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b4e3cef7

net/ipv6/ip6_offload.c

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto) 
		if (unlikely(!pskb_may_pull(skb, len)))

			break;



		opth = (void *)skb->data;

		proto = opth->nexthdr;

		__skb_pull(skb, len);

	}