mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-16 05:50:19 +00:00
net: Enable a userns root rtnl calls that are safe for unprivilged users
- Only allow moving network devices to network namespaces you have CAP_NET_ADMIN privileges over. - Enable creating/deleting/modifying interfaces - Enable adding/deleting addresses - Enable adding/setting/deleting neighbour entries - Enable adding/removing routes - Enable adding/removing fib rules - Enable setting the forwarding state - Enable adding/removing ipv6 address labels - Enable setting bridge parameter Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
c027aab4a6
commit
b51642f6d7
@ -240,9 +240,6 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
|
||||
struct nlattr *tb[IFLA_BRPORT_MAX];
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
ifm = nlmsg_data(nlh);
|
||||
|
||||
protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
|
||||
|
@ -275,9 +275,6 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
|
||||
struct nlattr *tb[FRA_MAX+1];
|
||||
int err = -EINVAL, unresolved = 0;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh)))
|
||||
goto errout;
|
||||
|
||||
@ -427,9 +424,6 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
|
||||
struct nlattr *tb[FRA_MAX+1];
|
||||
int err = -EINVAL;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*frh)))
|
||||
goto errout;
|
||||
|
||||
|
@ -1620,9 +1620,6 @@ static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
struct net_device *dev = NULL;
|
||||
int err = -EINVAL;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
ASSERT_RTNL();
|
||||
if (nlmsg_len(nlh) < sizeof(*ndm))
|
||||
goto out;
|
||||
@ -1687,9 +1684,6 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
struct net_device *dev = NULL;
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
ASSERT_RTNL();
|
||||
err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
|
||||
if (err < 0)
|
||||
@ -1968,9 +1962,6 @@ static int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
struct nlattr *tb[NDTA_MAX+1];
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = nlmsg_parse(nlh, sizeof(*ndtmsg), tb, NDTA_MAX,
|
||||
nl_neightbl_policy);
|
||||
if (err < 0)
|
||||
|
@ -1316,6 +1316,10 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
|
||||
err = PTR_ERR(net);
|
||||
goto errout;
|
||||
}
|
||||
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) {
|
||||
err = -EPERM;
|
||||
goto errout;
|
||||
}
|
||||
err = dev_change_net_namespace(dev, net, ifname);
|
||||
put_net(net);
|
||||
if (err)
|
||||
@ -1547,9 +1551,6 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
struct nlattr *tb[IFLA_MAX+1];
|
||||
char ifname[IFNAMSIZ];
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
|
||||
if (err < 0)
|
||||
goto errout;
|
||||
@ -1593,9 +1594,6 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
int err;
|
||||
LIST_HEAD(list_kill);
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
|
||||
if (err < 0)
|
||||
return err;
|
||||
@ -1726,9 +1724,6 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
struct nlattr *linkinfo[IFLA_INFO_MAX+1];
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
#ifdef CONFIG_MODULES
|
||||
replay:
|
||||
#endif
|
||||
|
@ -539,9 +539,6 @@ static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv4_policy);
|
||||
if (err < 0)
|
||||
goto errout;
|
||||
@ -649,9 +646,6 @@ static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
ifa = rtm_to_ifaddr(net, nlh);
|
||||
if (IS_ERR(ifa))
|
||||
return PTR_ERR(ifa);
|
||||
|
@ -613,9 +613,6 @@ static int inet_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *ar
|
||||
struct fib_table *tb;
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = rtm_to_fib_config(net, skb, nlh, &cfg);
|
||||
if (err < 0)
|
||||
goto errout;
|
||||
@ -638,9 +635,6 @@ static int inet_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *ar
|
||||
struct fib_table *tb;
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = rtm_to_fib_config(net, skb, nlh, &cfg);
|
||||
if (err < 0)
|
||||
goto errout;
|
||||
|
@ -3514,9 +3514,6 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
struct in6_addr *pfx;
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
|
||||
if (err < 0)
|
||||
return err;
|
||||
@ -3587,9 +3584,6 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
|
||||
u8 ifa_flags;
|
||||
int err;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
@ -425,9 +425,6 @@ static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh,
|
||||
u32 label;
|
||||
int err = 0;
|
||||
|
||||
if (!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
@ -2446,9 +2446,6 @@ static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *a
|
||||
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;
|
||||
@ -2464,9 +2461,6 @@ static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *a
|
||||
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;
|
||||
|
Loading…
Reference in New Issue
Block a user