Commit f1925ca5 authored Jun 15, 2017 by Haishuang Yan Committed by David S. Miller Jun 16, 2017

ip6_tunnel: fix potential issue in __ip6_tnl_rcv



When __ip6_tnl_rcv fails, the tun_dst won't be freed, so call
dst_release to free it in error code path.

Fixes: 8d79266b ("ip6_tunnel: add collect_md mode to IPv6 tunnels")
CC: Alexei Starovoitov <ast@fb.com>
Tested-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 469f87e1

net/ipv6/ip6_tunnel.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -858,6 +858,8 @@ static int __ip6_tnl_rcv(struct ip6_tnl tunnel, struct sk_buff skb,
		return 0;

		drop:
		if (tun_dst)
		dst_release((struct dst_entry *)tun_dst);
		kfree_skb(skb);
		return 0;
		}

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