diff options
| author |   tholo <tholo@openbsd.org> | 1997-01-26 01:23:42 +0000 |
|---|---|---|
| committer | tholo <tholo@openbsd.org> | 1997-01-26 01:23:42 +0000 |
| commit | adbc1e472823ca8bdc1d8c5e724ce4d51f733c97 (patch) | |
| tree | c6aaa3cd80ba239bf5a4e1350d1b2df13c2546a8 /sys/netinet/udp_usrreq.c | |
| parent | use mktemp(1) to avoid /tmp race; spotted by dholland@eecs.harvard.edu (diff) | |
| download | wireguard-openbsd-adbc1e472823ca8bdc1d8c5e724ce4d51f733c97.tar.xz wireguard-openbsd-adbc1e472823ca8bdc1d8c5e724ce4d51f733c97.zip | |
Make ip_len and ip_off unsigned values; don't transmit or accept packets
larger than the maximum IP packet size. From NetBSD.
Diffstat (limited to 'sys/netinet/udp_usrreq.c')
| -rw-r--r-- | sys/netinet/udp_usrreq.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c index f78e4be2d7f..31bdf858ac9 100644 --- a/sys/netinet/udp_usrreq.c +++ b/sys/netinet/udp_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: udp_usrreq.c,v 1.7 1996/07/05 20:42:18 deraadt Exp $ */ +/* $OpenBSD: udp_usrreq.c,v 1.8 1997/01/26 01:23:46 tholo Exp $ */ /* $NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $ */ /* @@ -461,6 +461,15 @@ udp_output(m, va_alist) } /* + * Compute the packet length of the IP header, and + * punt if the length looks bogus. + */ + if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) { + error = EMSGSIZE; + goto release; + } + + /* * Fill in mbuf with extended UDP header * and addresses and length put into network format. */ |