linux-kernel - [PATCH 4.4 26/92] xfrm: fix xfrm_do

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Date:   Thu, 24 May 2018 11:38:03 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Antony Antony <antony@...nome.org>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>
Subject: [PATCH 4.4 26/92] xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)

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

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

From: Antony Antony <antony@...nome.org>

commit 75bf50f4aaa1c78d769d854ab3d975884909e4fb upstream.

copy geniv when cloning the xfrm state.

x->geniv was not copied to the new state and migration would fail.

xfrm_do_migrate
  ..
  xfrm_state_clone()
   ..
   ..
   esp_init_aead()
   crypto_alloc_aead()
    crypto_alloc_tfm()
     crypto_find_alg() return EAGAIN and failed

Signed-off-by: Antony Antony <antony@...nome.org>
Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>
Cc: Ben Hutchings <ben.hutchings@...ethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/xfrm/xfrm_state.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1159,6 +1159,7 @@ static struct xfrm_state *xfrm_state_clo
 
 	if (orig->aead) {
 		x->aead = xfrm_algo_aead_clone(orig->aead);
+		x->geniv = orig->geniv;
 		if (!x->aead)
 			goto error;
 	}