Contributors: 24
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| James Morris |
701 |
69.13% |
5 |
10.64% |
| Nicolas Dichtel |
68 |
6.71% |
9 |
19.15% |
| Andrew Morton |
28 |
2.76% |
3 |
6.38% |
| Steve Grubb |
21 |
2.07% |
2 |
4.26% |
| David Woodhouse |
20 |
1.97% |
1 |
2.13% |
| Eric Paris |
20 |
1.97% |
4 |
8.51% |
| Paul Moore |
19 |
1.87% |
2 |
4.26% |
| Américo Wang |
17 |
1.68% |
3 |
6.38% |
| Roopa Prabhu |
16 |
1.58% |
2 |
4.26% |
| Jamal Hadi Salim |
15 |
1.48% |
1 |
2.13% |
| Michal Schmidt |
13 |
1.28% |
1 |
2.13% |
| David Ahern |
9 |
0.89% |
2 |
4.26% |
| Nikolay Aleksandrov |
8 |
0.79% |
1 |
2.13% |
| Miloslav Trmač |
8 |
0.79% |
1 |
2.13% |
| Ido Schimmel |
8 |
0.79% |
1 |
2.13% |
| Eugene Syromiatnikov |
8 |
0.79% |
1 |
2.13% |
| Jiri Pirko |
7 |
0.69% |
1 |
2.13% |
| Thomas Graf |
7 |
0.69% |
1 |
2.13% |
| Lorenzo Colitti |
6 |
0.59% |
1 |
2.13% |
| Julien Gomes |
6 |
0.59% |
1 |
2.13% |
| Amy Griffis |
3 |
0.30% |
1 |
2.13% |
| Christian Göttsche |
3 |
0.30% |
1 |
2.13% |
| Thomas Gleixner |
2 |
0.20% |
1 |
2.13% |
| Petr Machata |
1 |
0.10% |
1 |
2.13% |
| Total |
1014 |
|
47 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Netlink message type permission tables, for user generated messages.
*
* Author: James Morris <jmorris@redhat.com>
*
* Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/if.h>
#include <linux/inet_diag.h>
#include <linux/xfrm.h>
#include <linux/audit.h>
#include <linux/sock_diag.h>
#include "flask.h"
#include "av_permissions.h"
#include "security.h"
struct nlmsg_perm {
u16 nlmsg_type;
u32 perm;
};
static const struct nlmsg_perm nlmsg_route_perms[] = {
{ RTM_NEWLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETLINK, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_SETLINK, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_NEWADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELADDR, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETADDR, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELROUTE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETROUTE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETNEIGH, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELRULE, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETRULE, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELQDISC, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETQDISC, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETTCLASS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETTFILTER, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELACTION, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETACTION, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWPREFIX, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETMULTICAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_GETANYCAST, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_GETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_SETNEIGHTBL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_NEWADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETADDRLABEL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_GETDCB, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_SETDCB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_NEWNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETNETCONF, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWMDB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELMDB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETMDB, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWNSID, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELNSID, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_GETNSID, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWSTATS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_GETSTATS, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_SETSTATS, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_NEWCACHEREPORT, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETCHAIN, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_NEWVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETVLAN, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWNEXTHOPBUCKET, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELNEXTHOPBUCKET, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETNEXTHOPBUCKET, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWTUNNEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELTUNNEL, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETTUNNEL, NETLINK_ROUTE_SOCKET__NLMSG_READ },
};
static const struct nlmsg_perm nlmsg_tcpdiag_perms[] = {
{ TCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
{ DCCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
{ SOCK_DIAG_BY_FAMILY, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
{ SOCK_DESTROY, NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE },
};
static const struct nlmsg_perm nlmsg_xfrm_perms[] = {
{ XFRM_MSG_NEWSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_DELSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_GETSA, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_NEWPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_DELPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_GETPOLICY, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_ALLOCSPI, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_ACQUIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_EXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_UPDPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_UPDSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_POLEXPIRE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_FLUSHSA, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_FLUSHPOLICY, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_NEWAE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_GETAE, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_REPORT, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_MIGRATE, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_NEWSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_GETSADINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_NEWSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_GETSPDINFO, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_MAPPING, NETLINK_XFRM_SOCKET__NLMSG_READ },
{ XFRM_MSG_SETDEFAULT, NETLINK_XFRM_SOCKET__NLMSG_WRITE },
{ XFRM_MSG_GETDEFAULT, NETLINK_XFRM_SOCKET__NLMSG_READ },
};
static const struct nlmsg_perm nlmsg_audit_perms[] = {
{ AUDIT_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
{ AUDIT_SET, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
{ AUDIT_LIST, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
{ AUDIT_ADD, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
{ AUDIT_DEL, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
{ AUDIT_LIST_RULES, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV },
{ AUDIT_ADD_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
{ AUDIT_DEL_RULE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
{ AUDIT_USER, NETLINK_AUDIT_SOCKET__NLMSG_RELAY },
{ AUDIT_SIGNAL_INFO, NETLINK_AUDIT_SOCKET__NLMSG_READ },
{ AUDIT_TRIM, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
{ AUDIT_MAKE_EQUIV, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
{ AUDIT_TTY_GET, NETLINK_AUDIT_SOCKET__NLMSG_READ },
{ AUDIT_TTY_SET, NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT },
{ AUDIT_GET_FEATURE, NETLINK_AUDIT_SOCKET__NLMSG_READ },
{ AUDIT_SET_FEATURE, NETLINK_AUDIT_SOCKET__NLMSG_WRITE },
};
static int nlmsg_perm(u16 nlmsg_type, u32 *perm, const struct nlmsg_perm *tab, size_t tabsize)
{
unsigned int i;
int err = -EINVAL;
for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
if (nlmsg_type == tab[i].nlmsg_type) {
*perm = tab[i].perm;
err = 0;
break;
}
return err;
}
int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
{
int err = 0;
switch (sclass) {
case SECCLASS_NETLINK_ROUTE_SOCKET:
/* RTM_MAX always points to RTM_SETxxxx, ie RTM_NEWxxx + 3.
* If the BUILD_BUG_ON() below fails you must update the
* structures at the top of this file with the new mappings
* before updating the BUILD_BUG_ON() macro!
*/
BUILD_BUG_ON(RTM_MAX != (RTM_NEWTUNNEL + 3));
err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
sizeof(nlmsg_route_perms));
break;
case SECCLASS_NETLINK_TCPDIAG_SOCKET:
err = nlmsg_perm(nlmsg_type, perm, nlmsg_tcpdiag_perms,
sizeof(nlmsg_tcpdiag_perms));
break;
case SECCLASS_NETLINK_XFRM_SOCKET:
/* If the BUILD_BUG_ON() below fails you must update the
* structures at the top of this file with the new mappings
* before updating the BUILD_BUG_ON() macro!
*/
BUILD_BUG_ON(XFRM_MSG_MAX != XFRM_MSG_GETDEFAULT);
err = nlmsg_perm(nlmsg_type, perm, nlmsg_xfrm_perms,
sizeof(nlmsg_xfrm_perms));
break;
case SECCLASS_NETLINK_AUDIT_SOCKET:
if ((nlmsg_type >= AUDIT_FIRST_USER_MSG &&
nlmsg_type <= AUDIT_LAST_USER_MSG) ||
(nlmsg_type >= AUDIT_FIRST_USER_MSG2 &&
nlmsg_type <= AUDIT_LAST_USER_MSG2)) {
*perm = NETLINK_AUDIT_SOCKET__NLMSG_RELAY;
} else {
err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
sizeof(nlmsg_audit_perms));
}
break;
/* No messaging from userspace, or class unknown/unhandled */
default:
err = -ENOENT;
break;
}
return err;
}