net: Push capable(CAP_NET_ADMIN) into the rtnl methods
- In rtnetlink_rcv_msg convert the capable(CAP_NET_ADMIN) check
to ns_capable(net->user-ns, CAP_NET_ADMIN). Allowing unprivileged
users to make netlink calls to modify their local network
namespace.
- In the rtnetlink doit methods add capable(CAP_NET_ADMIN) so
that calls that are not safe for unprivileged users are still
protected.
Later patches will remove the extra capable calls from methods
that are safe for unprivilged users.
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 021a48e..c6215e2 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2446,6 +2446,9 @@
struct fib6_config cfg;
int err;
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
err = rtm_to_fib6_config(skb, nlh, &cfg);
if (err < 0)
return err;
@@ -2461,6 +2464,9 @@
struct fib6_config cfg;
int err;
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
err = rtm_to_fib6_config(skb, nlh, &cfg);
if (err < 0)
return err;