[PATCH 4.8 45/45] esp6: Fix integrity verification when ESN are used

From: Greg Kroah-Hartman
Date: Fri Dec 09 2016 - 11:25:32 EST


4.8-stable review patch. If anyone has any objections, please let me know.

------------------

From: Tobias Brunner <tobias@xxxxxxxxxxxxxx>

commit a55e23864d381c5a4ef110df94b00b2fe121a70d upstream.

When handling inbound packets, the two halves of the sequence number
stored on the skb are already in network order.

Fixes: 000ae7b2690e ("esp6: Switch to new AEAD interface")
Signed-off-by: Tobias Brunner <tobias@xxxxxxxxxxxxxx>
Acked-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
net/ipv6/esp6.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -418,7 +418,7 @@ static int esp6_input(struct xfrm_state
esph = (void *)skb_push(skb, 4);
*seqhi = esph->spi;
esph->spi = esph->seq_no;
- esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.input.hi);
+ esph->seq_no = XFRM_SKB_CB(skb)->seq.input.hi;
aead_request_set_callback(req, 0, esp_input_done_esn, skb);
}