mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-15 10:17:20 +00:00
b02fd8b790
if_epair used the 'params' argument to pass a pointer to the b interface through if_clone_create(). This pointer can be controlled by userspace, which means it could be abused to trigger a panic. While this requires PRIV_NET_IFCREATE privileges those are assigned to vnet jails, which means that vnet jails could panic the system. Reported by: Ilja Van Sprundel <ivansprundel@ioactive.com> MFC after: 3 days
88 lines
3.4 KiB
C
88 lines
3.4 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* From: @(#)if.h 8.1 (Berkeley) 6/10/93
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NET_IF_CLONE_H_
|
|
#define _NET_IF_CLONE_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#include <sys/_eventhandler.h>
|
|
|
|
#define IFC_NOGROUP 0x1
|
|
|
|
struct if_clone;
|
|
|
|
/* Methods. */
|
|
typedef int ifc_match_t(struct if_clone *, const char *);
|
|
typedef int ifc_create_t(struct if_clone *, char *, size_t, caddr_t);
|
|
typedef int ifc_destroy_t(struct if_clone *, struct ifnet *);
|
|
|
|
typedef int ifcs_create_t(struct if_clone *, int, caddr_t);
|
|
typedef void ifcs_destroy_t(struct ifnet *);
|
|
|
|
/* Interface cloner (de)allocating functions. */
|
|
struct if_clone *
|
|
if_clone_advanced(const char *, u_int, ifc_match_t, ifc_create_t,
|
|
ifc_destroy_t);
|
|
struct if_clone *
|
|
if_clone_simple(const char *, ifcs_create_t, ifcs_destroy_t, u_int);
|
|
void if_clone_detach(struct if_clone *);
|
|
|
|
/* Unit (de)allocating fucntions. */
|
|
int ifc_name2unit(const char *name, int *unit);
|
|
int ifc_alloc_unit(struct if_clone *, int *);
|
|
void ifc_free_unit(struct if_clone *, int);
|
|
const char *ifc_name(struct if_clone *);
|
|
void ifc_flags_set(struct if_clone *, int flags);
|
|
int ifc_flags_get(struct if_clone *);
|
|
|
|
/* Interface clone event. */
|
|
typedef void (*if_clone_event_handler_t)(void *, struct if_clone *);
|
|
EVENTHANDLER_DECLARE(if_clone_event, if_clone_event_handler_t);
|
|
|
|
/* The below interfaces used only by net/if.c. */
|
|
void vnet_if_clone_init(void);
|
|
int if_clone_create(char *, size_t, caddr_t);
|
|
int if_clone_destroy(const char *);
|
|
int if_clone_list(struct if_clonereq *);
|
|
struct if_clone *if_clone_findifc(struct ifnet *);
|
|
void if_clone_addgroup(struct ifnet *, struct if_clone *);
|
|
|
|
/* The below interfaces are used only by epair(4). */
|
|
void if_clone_addif(struct if_clone *, struct ifnet *);
|
|
int if_clone_destroyif(struct if_clone *, struct ifnet *);
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* !_NET_IF_CLONE_H_ */
|