diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index b1e24446..0693ab61 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -222,6 +222,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 	int assoclen;
 	int extralen;
 	int tailen;
+	int esph_offset;
 	__be64 seqno;
 	__u8 proto = *skb_mac_header(skb);
 
@@ -392,12 +393,13 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 	}
 
 cow:
+	esph_offset = (unsigned char *)esph - skb_transport_header(skb);
 	err = skb_cow_data(skb, tailen, &trailer);
 	if (err < 0)
 		goto error;
 	nfrags = err;
 	tail = skb_tail_pointer(trailer);
-	esph = ip_esp_hdr(skb);
+	esph = (struct ip_esp_hdr *)(skb_transport_header(skb) + esph_offset);
 
 skip_cow:
 	esp_output_fill_trailer(tail, tfclen, plen, proto);