4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Yossef Efraim <[email protected]> [ 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 <[email protected]> Signed-off-by: Steffen Klassert <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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);
