diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2012-11-16 04:03:00 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-19 02:32:44 +0100 |
| commit | dfc47ef8639facd77210e74be831943c2fdd9c74 (patch) | |
| tree | 5c7e9f93a999bf1d38b216af346ce2159e5f18ec /net/decnet | |
| parent | net: Don't export sysctls to unprivileged users (diff) | |
| download | linux-dfc47ef8639facd77210e74be831943c2fdd9c74.tar.xz linux-dfc47ef8639facd77210e74be831943c2fdd9c74.zip | |
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/decnet')
| -rw-r--r-- | net/decnet/dn_dev.c | 6 | ||||
| -rw-r--r-- | net/decnet/dn_fib.c | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c index 7b7e561412d3..e47ba9fc4a0e 100644 --- a/net/decnet/dn_dev.c +++ b/net/decnet/dn_dev.c @@ -573,6 +573,9 @@ static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) struct dn_ifaddr __rcu **ifap; int err = -EINVAL; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (!net_eq(net, &init_net)) goto errout; @@ -614,6 +617,9 @@ static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) struct dn_ifaddr *ifa; int err; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (!net_eq(net, &init_net)) return -EINVAL; diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c index 102d6106a942..e36614eccc04 100644 --- a/net/decnet/dn_fib.c +++ b/net/decnet/dn_fib.c @@ -520,6 +520,9 @@ static int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void * struct rtattr **rta = arg; struct rtmsg *r = NLMSG_DATA(nlh); + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (!net_eq(net, &init_net)) return -EINVAL; @@ -540,6 +543,9 @@ static int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void * struct rtattr **rta = arg; struct rtmsg *r = NLMSG_DATA(nlh); + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (!net_eq(net, &init_net)) return -EINVAL; |