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authorEric W. Biederman <ebiederm@xmission.com>2012-11-16 03:03:00 +0000
committerDavid S. Miller <davem@davemloft.net>2012-11-18 20:32:44 -0500
commitdfc47ef8639facd77210e74be831943c2fdd9c74 (patch)
tree5c7e9f93a999bf1d38b216af346ce2159e5f18ec /net/phonet/pn_netlink.c
parent464dc801c76aa0db88e16e8f5f47c6879858b9b2 (diff)
downloadlinux-dfc47ef8639facd77210e74be831943c2fdd9c74.tar.gz
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>
Diffstat (limited to 'net/phonet/pn_netlink.c')
-rw-r--r--net/phonet/pn_netlink.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/phonet/pn_netlink.c b/net/phonet/pn_netlink.c
index 83a8389619a..0193630d306 100644
--- a/net/phonet/pn_netlink.c
+++ b/net/phonet/pn_netlink.c
@@ -70,6 +70,9 @@ static int addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *attr)
int err;
u8 pnaddr;
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -230,6 +233,9 @@ static int route_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *attr)
int err;
u8 dst;
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
if (!capable(CAP_SYS_ADMIN))
return -EPERM;