net: check kern before calling security subsystem

Before calling capable(CAP_NET_RAW) check if this operations is on behalf of the kernel or on behalf of userspace. Do not do the security check if it is on behalf of the kernel. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
git-mirror · Nov 6, 2009 · c84b326 · c84b326
1 parent 3f378b6
commit c84b326
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
@@ -832,7 +832,7 @@ static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
 			sock->type != SOCK_DGRAM && sock->type != SOCK_RAW)
 		return -ESOCKTNOSUPPORT;
 
-	if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
+	if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
 		return -EPERM;
 
 	sock->ops = &l2cap_sock_ops;

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
@@ -326,7 +326,7 @@ static int inet_create(struct net *net, struct socket *sock, int protocol,
 	}
 
 	err = -EPERM;
-	if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
+	if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
 		goto out_rcu_unlock;
 
 	err = -EAFNOSUPPORT;

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
@@ -159,7 +159,7 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol,
 	}
 
 	err = -EPERM;
-	if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
+	if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
 		goto out_rcu_unlock;
 
 	sock->ops = answer->ops;