lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

net: Push capable(CAP_NET_ADMIN) into the rtnl methods

Browse Source 
- 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>
This commit is contained in:
Eric W. Biederman
2012-11-16 03:03:00 +00:00
committed by David S. Miller
parent 464dc801c7
commit dfc47ef863
17 changed files with 102 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
net/sched/sch_api.c
View File

@@ -980,6 +980,9 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
struct Qdisc *p = NULL;
int err;
if ((n->nlmsg_type != RTM_GETQDISC) && !capable(CAP_NET_ADMIN))
return -EPERM;
dev = __dev_get_by_index(net, tcm->tcm_ifindex);
if (!dev)
return -ENODEV;
@@ -1043,6 +1046,9 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
struct Qdisc *q, *p;
int err;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
replay:
/* Reinit, just in case something touches this. */
tcm = nlmsg_data(n);
@@ -1379,6 +1385,9 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
u32 qid = TC_H_MAJ(clid);
int err;
if ((n->nlmsg_type != RTM_GETTCLASS) && !capable(CAP_NET_ADMIN))
return -EPERM;
dev = __dev_get_by_index(net, tcm->tcm_ifindex);
if (!dev)
return -ENODEV;