[IPSEC]: Restrict socket policy loading to CAP_NET_ADMIN.

The interface needs much redesigning if we wish to allow
normal users to do this in some way.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index fc7c481d0d79..ff4bd067b397 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -848,6 +848,9 @@ mc_msf_out:
  
                 case IP_IPSEC_POLICY:
                 case IP_XFRM_POLICY:
+                        err = -EPERM;
+                        if (!capable(CAP_NET_ADMIN))
+                                break;
                         err = xfrm_user_policy(sk, optname, optval, optlen);
                         break;