diff options
Diffstat (limited to 'sys/netinet/ip_icmp.c')
| -rw-r--r-- | sys/netinet/ip_icmp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c index d911e72d3d2..07429e91d19 100644 --- a/sys/netinet/ip_icmp.c +++ b/sys/netinet/ip_icmp.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ip_icmp.c,v 1.178 2018/11/05 10:06:10 claudio Exp $ */ +/* $OpenBSD: ip_icmp.c,v 1.179 2018/11/05 20:52:22 bluhm Exp $ */ /* $NetBSD: ip_icmp.c,v 1.19 1996/02/13 23:42:22 christos Exp $ */ /* @@ -206,9 +206,9 @@ icmp_do_error(struct mbuf *n, int type, int code, u_int32_t dest, int destmtu) * according to RFC1812; */ - KASSERT(ICMP_MINLEN <= MCLBYTES); + KASSERT(ICMP_MINLEN + sizeof (struct ip) <= MCLBYTES); - if (icmplen + ICMP_MINLEN > MCLBYTES) + if (sizeof (struct ip) + icmplen + ICMP_MINLEN > MCLBYTES) icmplen = MCLBYTES - ICMP_MINLEN - sizeof (struct ip); m = m_gethdr(M_DONTWAIT, MT_HEADER); |