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authoraaron <aaron@openbsd.org>2000-10-25 22:40:40 +0000
committeraaron <aaron@openbsd.org>2000-10-25 22:40:40 +0000
commite7017d7f7cb45c2a0554c45e8aba1e71b6a3af4a (patch)
tree8be9e4ae481b17ee0e6659ee7f071ea686beeca0
parentsilence the "no multicast" warning for IFT_ENC, too (diff)
downloadwireguard-openbsd-e7017d7f7cb45c2a0554c45e8aba1e71b6a3af4a.tar.xz
wireguard-openbsd-e7017d7f7cb45c2a0554c45e8aba1e71b6a3af4a.zip
Do not null deref in the IPSEC+PMTU case; provos@ ok. Thanks to
andrews@crt.se for testing.
-rw-r--r--sys/netinet/ip_output.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 64a7ce17ebd..527a002c377 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip_output.c,v 1.82 2000/09/29 03:51:11 angelos Exp $ */
+/* $OpenBSD: ip_output.c,v 1.83 2000/10/25 22:40:40 aaron Exp $ */
/* $NetBSD: ip_output.c,v 1.28 1996/02/13 23:43:07 christos Exp $ */
/*
@@ -532,7 +532,7 @@ sendit:
* If we're doing Path MTU discovery, we need to set DF unless
* the route's MTU is locked.
*/
- if ((flags & IP_MTUDISC) && ro->ro_rt &&
+ if ((flags & IP_MTUDISC) && ro && ro->ro_rt &&
(ro->ro_rt->rt_rmx.rmx_locks & RTV_MTU) == 0)
ip->ip_off |= IP_DF;