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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Thomas Egerer <hakke_007@gmx.de>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        "David S. Miller" <davem@davemloft.net>,
        Yongqin Liu <yongqin.liu@linaro.org>
Subject: [PATCH 4.4 03/43] ipv4+ipv6: Make INET*_ESP select CRYPTO_ECHAINIV
Date:   Tue, 14 Aug 2018 19:17:39 +0200
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4.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Thomas Egerer <hakke_007@gmx.de>

commit 32b6170ca59ccf07d0e394561e54b2cd9726038c upstream.

The ESP algorithms using CBC mode require echainiv. Hence INET*_ESP have
to select CRYPTO_ECHAINIV in order to work properly. This solves the
issues caused by a misconfiguration as described in [1].
The original approach, patching crypto/Kconfig was turned down by
Herbert Xu [2].

[1] https://lists.strongswan.org/pipermail/users/2015-December/009074.html
[2] http://marc.info/?l=linux-crypto-vger&m=145224655809562&w=2

Signed-off-by: Thomas Egerer <hakke_007@gmx.de>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Yongqin Liu <yongqin.liu@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ipv4/Kconfig |    1 +
 net/ipv6/Kconfig |    1 +
 2 files changed, 2 insertions(+)

--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -354,6 +354,7 @@ config INET_ESP
 	select CRYPTO_CBC
 	select CRYPTO_SHA1
 	select CRYPTO_DES
+	select CRYPTO_ECHAINIV
 	---help---
 	  Support for IPsec ESP.
 
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -69,6 +69,7 @@ config INET6_ESP
 	select CRYPTO_CBC
 	select CRYPTO_SHA1
 	select CRYPTO_DES
+	select CRYPTO_ECHAINIV
 	---help---
 	  Support for IPsec ESP.