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/can/gw.c | |
| 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/can/gw.c')
| -rw-r--r-- | net/can/gw.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/can/gw.c b/net/can/gw.c index 1f5c9785a262..574dda78eb0f 100644 --- a/net/can/gw.c +++ b/net/can/gw.c @@ -751,6 +751,9 @@ static int cgw_create_job(struct sk_buff *skb, struct nlmsghdr *nlh, struct cgw_job *gwj; int err = 0; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (nlmsg_len(nlh) < sizeof(*r)) return -EINVAL; @@ -839,6 +842,9 @@ static int cgw_remove_job(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) struct can_can_gw ccgw; int err = 0; + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (nlmsg_len(nlh) < sizeof(*r)) return -EINVAL; |