Author: tuexen
Date: Thu Oct 2 10:49:01 2014
New Revision: 272408
URL: https://svnweb.freebsd.org/changeset/base/272408
Log:
Check for UDP/IPv6 packets that the length in the UDP header is at least
the minimum. Make the check similar to the one for UDPLite/IPv6.
MFC after: 3 days
Modified:
head/sys/netinet6/udp6_usrreq.c
Modified: head/sys/netinet6/udp6_usrreq.c
==============================================================================
--- head/sys/netinet6/udp6_usrreq.c Thu Oct 2 10:46:12 2014
(r272407)
+++ head/sys/netinet6/udp6_usrreq.c Thu Oct 2 10:49:01 2014
(r272408)
@@ -237,18 +237,9 @@ udp6_input(struct mbuf **mp, int *offp,
/* XXX: What is the right UDPLite MIB counter? */
goto badunlocked;
}
- }
- if (nxt == IPPROTO_UDP && plen != ulen) {
- UDPSTAT_INC(udps_badlen);
- goto badunlocked;
- }
-
- /*
- * Checksum extended UDP header and data.
- */
- if (uh->uh_sum == 0) {
- if (ulen > plen || ulen < sizeof(struct udphdr)) {
- UDPSTAT_INC(udps_nosum);
+ } else {
+ if ((ulen < sizeof(struct udphdr)) || (plen != ulen)) {
+ UDPSTAT_INC(udps_badlen);
goto badunlocked;
}
}
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
