Author: tuexen
Date: Wed May 14 17:28:49 2014
New Revision: 266057
URL: http://svnweb.freebsd.org/changeset/base/266057
Log:
MFC r257803:
Make sure that we don't try to build an ASCONF-ACK chunk
larger than what fits in the the mbuf cluster.
This issue was reported by Andrew Galante.
Modified:
stable/9/sys/netinet/sctp_asconf.c
Directory Properties:
stable/9/sys/ (props changed)
Modified: stable/9/sys/netinet/sctp_asconf.c
==============================================================================
--- stable/9/sys/netinet/sctp_asconf.c Wed May 14 17:26:06 2014
(r266056)
+++ stable/9/sys/netinet/sctp_asconf.c Wed May 14 17:28:49 2014
(r266057)
@@ -2616,7 +2616,8 @@ sctp_compose_asconf(struct sctp_tcb *stc
/* get the parameter length */
p_length = SCTP_SIZE32(aa->ap.aph.ph.param_length);
/* will it fit in current chunk? */
- if (SCTP_BUF_LEN(m_asconf) + p_length >
stcb->asoc.smallest_mtu) {
+ if ((SCTP_BUF_LEN(m_asconf) + p_length >
stcb->asoc.smallest_mtu) ||
+ (SCTP_BUF_LEN(m_asconf) + p_length > MCLBYTES)) {
/* won't fit, so we're done with this chunk */
break;
}
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