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ipip: validate header length in ipip_tunnel_xmit

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[ Upstream commit 47d858d0bd ]

We need the same checks introduced by commit cb9f1b7838
("ip: validate header length on virtual device xmit") for
ipip tunnel.

Fixes: cb9f1b7838 ("ip: validate header length on virtual device xmit")
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Haishuang Yan
2019-07-25 11:07:56 +08:00
committed by Greg Kroah-Hartman
parent 1bb2dd37cb
commit f186fb5ccf
1 changed files with 3 additions and 0 deletions
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3
net/ipv4/ipip.c
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@@ -281,6 +281,9 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb,
const struct iphdr *tiph = &tunnel->parms.iph;
u8 ipproto;
if (!pskb_inet_may_pull(skb))
goto tx_error;
switch (skb->protocol) {
case htons(ETH_P_IP):
ipproto = IPPROTO_IPIP;