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| author | Thomas Haller <thaller@redhat.com> | 2022-09-06 22:55:42 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-09-15 12:01:02 +0200 |
| commit | d156971854045120e1eab74b9e9ec2ac516ba91f (patch) | |
| tree | e4124daab35e274b1193ab185434ee31722039b9 /net/mptcp | |
| parent | 0522b424c4c2a1f7d79d62b7723c07d3415d94e5 (diff) | |
| download | lwn-d156971854045120e1eab74b9e9ec2ac516ba91f.tar.gz lwn-d156971854045120e1eab74b9e9ec2ac516ba91f.zip | |
mptcp: allow privileged operations from user namespaces
GENL_ADMIN_PERM checks that the user has CAP_NET_ADMIN in the initial
namespace by calling netlink_capable(). Instead, use GENL_UNS_ADMIN_PERM
which uses netlink_ns_capable(). This checks that the caller has
CAP_NET_ADMIN in the current user namespace.
See also
commit 4a92602aa1cd ("openvswitch: allow management from inside user namespaces")
which introduced this mechanism. See also
commit 5617c6cd6f84 ("nl80211: Allow privileged operations from user namespaces")
which introduced this for nl80211.
Signed-off-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/pm_netlink.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 5e142c0c597a..afc98adf2746 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -2218,17 +2218,17 @@ static const struct genl_small_ops mptcp_pm_ops[] = { { .cmd = MPTCP_PM_CMD_ADD_ADDR, .doit = mptcp_nl_cmd_add_addr, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_DEL_ADDR, .doit = mptcp_nl_cmd_del_addr, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_FLUSH_ADDRS, .doit = mptcp_nl_cmd_flush_addrs, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_GET_ADDR, @@ -2238,7 +2238,7 @@ static const struct genl_small_ops mptcp_pm_ops[] = { { .cmd = MPTCP_PM_CMD_SET_LIMITS, .doit = mptcp_nl_cmd_set_limits, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_GET_LIMITS, @@ -2247,27 +2247,27 @@ static const struct genl_small_ops mptcp_pm_ops[] = { { .cmd = MPTCP_PM_CMD_SET_FLAGS, .doit = mptcp_nl_cmd_set_flags, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_ANNOUNCE, .doit = mptcp_nl_cmd_announce, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_REMOVE, .doit = mptcp_nl_cmd_remove, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_SUBFLOW_CREATE, .doit = mptcp_nl_cmd_sf_create, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, { .cmd = MPTCP_PM_CMD_SUBFLOW_DESTROY, .doit = mptcp_nl_cmd_sf_destroy, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, }, }; |