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Pull up the following revisions(s) (requested by martin in ticket #1442): 

sys/net/if_pppoe.c:	revision 1.179

pppoe(4): fix CVE-2022-29867 - discovery phase local network
mbuf corruption.
This commit is contained in:
sborrill 2022-05-04 15:08:47 +00:00
parent ba081a24b2
commit 9c1b890c98
1 changed files with 13 additions and 2 deletions
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15
sys/net/if_pppoe.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_pppoe.c,v 1.147.4.1 2020/02/13 19:40:05 martin Exp $ */
/* $NetBSD: if_pppoe.c,v 1.147.4.2 2022/05/04 15:08:47 sborrill Exp $ */
/*
* Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_pppoe.c,v 1.147.4.1 2020/02/13 19:40:05 martin Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_pppoe.c,v 1.147.4.2 2022/05/04 15:08:47 sborrill Exp $");
#ifdef _KERNEL_OPT
#include "pppoe.h"
@ -887,6 +887,10 @@ breakbreak:;
}
sc->sc_ac_cookie_len = ac_cookie_len;
memcpy(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
} else if (sc->sc_ac_cookie) {
free(sc->sc_ac_cookie, M_DEVBUF);
sc->sc_ac_cookie = NULL;
sc->sc_ac_cookie_len = 0;
}
if (relay_sid) {
if (sc->sc_relay_sid)
@ -902,6 +906,10 @@ breakbreak:;
}
sc->sc_relay_sid_len = relay_sid_len;
memcpy(sc->sc_relay_sid, relay_sid, relay_sid_len);
} else if (sc->sc_relay_sid) {
free(sc->sc_relay_sid, M_DEVBUF);
sc->sc_relay_sid = NULL;
sc->sc_relay_sid_len = 0;
}
memcpy(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
callout_stop(&sc->sc_timeout);
@ -1324,6 +1332,9 @@ pppoe_get_mbuf(size_t len)
{
struct mbuf *m;
if (len + sizeof(struct ether_header) > MCLBYTES)
return NULL;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return NULL;