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-rw-r--r--net/ipv4/xfrm4_mode_beet.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/xfrm4_mode_beet.c b/net/ipv4/xfrm4_mode_beet.c
index b94775a8686..f68dfd8a0f5 100644
--- a/net/ipv4/xfrm4_mode_beet.c
+++ b/net/ipv4/xfrm4_mode_beet.c
@@ -78,10 +78,11 @@ static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)
protocol = iph->protocol;
if (unlikely(iph->protocol == IPPROTO_BEETPH)) {
- struct ip_beet_phdr *ph = (struct ip_beet_phdr*)(iph + 1);
+ struct ip_beet_phdr *ph;
if (!pskb_may_pull(skb, sizeof(*ph)))
goto out;
+ ph = (struct ip_beet_phdr *)(skb->h.ipiph + 1);
phlen = sizeof(*ph) + ph->padlen;
optlen = ph->hdrlen * 8 - phlen;
@@ -90,6 +91,7 @@ static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)
if (!pskb_may_pull(skb, phlen + optlen))
goto out;
+ skb->len -= phlen + optlen;
ph_nexthdr = ph->nexthdr;
}
@@ -97,6 +99,7 @@ static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)
skb->nh.raw = skb->data + (phlen - sizeof(*iph));
memmove(skb->nh.raw, iph, sizeof(*iph));
skb->h.raw = skb->data + (phlen + optlen);
+ skb->data = skb->h.raw;
iph = skb->nh.iph;
iph->ihl = (sizeof(*iph) + optlen) / 4;