From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 6 Aug 2005 13:33:15 +0000 (-0700)
Subject: [IPSEC]: Restrict socket policy loading to CAP_NET_ADMIN.
X-Git-Tag: firefly_0821_release~42380^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6fc0b4a7a73a81e74d0004732df358f4f9975be2;p=firefly-linux-kernel-4.4.55.git

[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>
---

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;
 
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index f3ef4c38d315..3bc144a79fa5 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -504,6 +504,9 @@ done:
 		break;
 	case IPV6_IPSEC_POLICY:
 	case IPV6_XFRM_POLICY:
+		retv = -EPERM;
+		if (!capable(CAP_NET_ADMIN))
+			break;
 		retv = xfrm_user_policy(sk, optname, optval, optlen);
 		break;