net: Make CAP_NET_BIND_SERVICE per user namespace

Allow privileged users in any user namespace to bind to
privileged sockets in network namespaces they control.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 4b29f6b52c11..b043c60429bd 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -283,7 +283,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                 return -EINVAL;
 
         snum = ntohs(addr->sin6_port);
-        if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
+        if (snum && snum < PROT_SOCK && !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE))
                 return -EACCES;
 
         lock_sock(sk);