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Diffstat (limited to 'sys/net/if_pppoe.c')
-rw-r--r--sys/net/if_pppoe.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/sys/net/if_pppoe.c b/sys/net/if_pppoe.c
index fbc69287a46..1ddf7bd15fa 100644
--- a/sys/net/if_pppoe.c
+++ b/sys/net/if_pppoe.c
@@ -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;