Commit 4c63f83c authored Jul 29, 2014 by Milan Broz Committed by Herbert Xu Jul 31, 2014

crypto: af_alg - properly label AF_ALG socket

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).

Cc: stable@vger.kernel.org
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent f3c400ef

crypto/af_alg.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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) {