Commit afb4c97d authored by Haishuang Yan's avatar Haishuang Yan Committed by David S. Miller

ip6_gre: fix potential memory leak in ip6erspan_rcv

If md is NULL, tun_dst must be freed, otherwise it will cause memory
leak.

Fixes: ef7baf5e ("ip6_gre: add ip6 erspan collect_md mode")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: default avatarHaishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 50670b6e
......@@ -550,8 +550,10 @@ static int ip6erspan_rcv(struct sk_buff *skb, int gre_hdr_len,
info = &tun_dst->u.tun_info;
md = ip_tunnel_info_opts(info);
if (!md)
if (!md) {
dst_release((struct dst_entry *)tun_dst);
return PACKET_REJECT;
}
memcpy(md, pkt_md, sizeof(*md));
md->version = ver;
......
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