diff options
| author | Mark Johnston <markj@FreeBSD.org> | 2023-03-06 20:06:00 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2023-03-06 20:06:00 +0000 |
| commit | 713264f6b8bc5f927dd52cf8ffcccfa397034fec (patch) | |
| tree | 2ed07fa4071cafaac14b871685d54277c56ca62a /sys/netinet/ip_input.c | |
| parent | 1be25bdb730ff07355cd6f5cb087d58e506c5519 (diff) | |
Diffstat (limited to 'sys/netinet/ip_input.c')
| -rw-r--r-- | sys/netinet/ip_input.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c index b8fb3861c5b8..5de09a32a2f5 100644 --- a/sys/netinet/ip_input.c +++ b/sys/netinet/ip_input.c @@ -519,6 +519,11 @@ ip_input(struct mbuf *m) goto bad; } } + /* The unspecified address can appear only as a src address - RFC1122 */ + if (__predict_false(ntohl(ip->ip_dst.s_addr) == INADDR_ANY)) { + IPSTAT_INC(ips_badaddr); + goto bad; + } if (m->m_pkthdr.csum_flags & CSUM_IP_CHECKED) { sum = !(m->m_pkthdr.csum_flags & CSUM_IP_VALID); |