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

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

From: Milan Broz <gmazyl...@gmail.com>

commit 4c63f83c2c2e16a13ce274ee678e28246bd33645 upstream.

Th AF_ALG socket was missing a security label (e.g. SELinux)
which means that socket was in "unlabeled" state.

This was recently demonstrated in the cryptsetup package
(cryptsetup v1.6.5 and later.)
See https://bugzilla.redhat.com/show_bug.cgi?id=1115120

This patch clones the sock's label from the parent sock
and resolves the issue (similar to AF_BLUETOOTH protocol family).

Signed-off-by: Milan Broz <gmazyl...@gmail.com>
Acked-by: Paul Moore <p...@paul-moore.com>
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
 crypto/af_alg.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index ac33d5f30778..bf948e134981 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -21,6 +21,7 @@
 #include <linux/module.h>
 #include <linux/net.h>
 #include <linux/rwsem.h>
+#include <linux/security.h>
 
 struct alg_type_list {
        const struct af_alg_type *type;
@@ -243,6 +244,7 @@ int af_alg_accept(struct sock *sk, struct socket *newsock)
 
        sock_init_data(newsock, sk2);
        sock_graft(sk2, newsock);
+       security_sk_clone(sk, sk2);
 
        err = type->accept(ask->private, sk2);
        if (err) {
-- 
1.9.1

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