This is a note to let you know that I've just added the patch titled

xfrm: Fix xfrm_replay_overflow_offload_esn

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: xfrm-fix-xfrm_replay_overflow_offload_esn.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Fri Mar 16 15:11:07 CET 2018

From: Yossef Efraim yossefe@mellanox.com Date: Tue, 28 Nov 2017 11:49:28 +0200 Subject: xfrm: Fix xfrm_replay_overflow_offload_esn

From: Yossef Efraim yossefe@mellanox.com

[ Upstream commit 0ba23a211360af7b6658e4fcfc571970bbbacc55 ]

In case of wrap around, replay_esn->oseq_hi is not updated before it is tested for it's actual value, leading function to fail with overflow indication and packets being dropped.

This patch updates replay_esn->oseq_hi in the right place.

Fixes: d7dbefc45cf5 ("xfrm: Add xfrm_replay_overflow functions for offloading") Signed-off-by: Yossef Efraim yossefe@mellanox.com Signed-off-by: Steffen Klassert steffen.klassert@secunet.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/xfrm/xfrm_replay.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/net/xfrm/xfrm_replay.c +++ b/net/xfrm/xfrm_replay.c @@ -666,7 +666,7 @@ static int xfrm_replay_overflow_offload_ if (unlikely(oseq < replay_esn->oseq)) { XFRM_SKB_CB(skb)->seq.output.hi = ++oseq_hi; xo->seq.hi = oseq_hi; - + replay_esn->oseq_hi = oseq_hi; if (replay_esn->oseq_hi == 0) { replay_esn->oseq--; replay_esn->oseq_hi--; @@ -678,7 +678,6 @@ static int xfrm_replay_overflow_offload_ }

replay_esn->oseq = oseq; - replay_esn->oseq_hi = oseq_hi;

if (xfrm_aevent_is_on(net)) x->repl->notify(x, XFRM_REPLAY_UPDATE);

Patches currently in stable-queue which might be from yossefe@mellanox.com are

queue-4.15/xfrm-fix-xfrm_replay_overflow_offload_esn.patch