diff options
| author |   angelos <angelos@openbsd.org> | 2000-01-07 16:34:10 +0000 |
|---|---|---|
| committer | angelos <angelos@openbsd.org> | 2000-01-07 16:34:10 +0000 |
| commit | 87ff0246c3eda772e820ca0eaa5061a6cfeb018c (patch) | |
| tree | 18301d35ac9751e08a3af1286fc78078619770d2 /sys/netinet/udp_usrreq.c | |
| parent | sync with Greg Oster's NetBSD changes to Jan 4th 2000 (diff) | |
| download | wireguard-openbsd-87ff0246c3eda772e820ca0eaa5061a6cfeb018c.tar.xz wireguard-openbsd-87ff0246c3eda772e820ca0eaa5061a6cfeb018c.zip | |
Early check for destination port 0 (itojun@)
Diffstat (limited to 'sys/netinet/udp_usrreq.c')
| -rw-r--r-- | sys/netinet/udp_usrreq.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c index 561d9bba850..25f22489ba7 100644 --- a/sys/netinet/udp_usrreq.c +++ b/sys/netinet/udp_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: udp_usrreq.c,v 1.36 2000/01/04 10:38:36 itojun Exp $ */ +/* $OpenBSD: udp_usrreq.c,v 1.37 2000/01/07 16:34:10 angelos Exp $ */ /* $NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $ */ /* @@ -248,6 +248,12 @@ udp_input(m, va_alist) } uh = (struct udphdr *)(mtod(m, caddr_t) + iphlen); + /* Check for illegal destination port 0 */ + if (uh->uh_dport == 0) { + udpstat.udps_noport++; + goto bad; + } + /* * Make mbuf data length reflect UDP length. * If not enough data to reflect UDP length, drop. |