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diff --git a/sys/netipsec/ipsec_output.c b/sys/netipsec/ipsec_output.c
--- a/sys/netipsec/ipsec_output.c
+++ b/sys/netipsec/ipsec_output.c
@@ -323,13 +323,26 @@
* this is done in the normal processing path.
*/
if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA) {
+ m = mb_unmapped_to_ext(m);
+ if (m == NULL) {
+ IPSECSTAT_INC(ips_out_nomem);
+ key_freesp(&sp);
+ return (ENOBUFS);
+ }
in_delayed_cksum(m);
m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA;
}
#if defined(SCTP) || defined(SCTP_SUPPORT)
if (m->m_pkthdr.csum_flags & CSUM_SCTP) {
- struct ip *ip = mtod(m, struct ip *);
+ struct ip *ip;
+ m = mb_unmapped_to_ext(m);
+ if (m == NULL) {
+ IPSECSTAT_INC(ips_out_nomem);
+ key_freesp(&sp);
+ return (ENOBUFS);
+ }
+ ip = mtod(m, struct ip *);
sctp_delayed_cksum(m, (uint32_t)(ip->ip_hl << 2));
m->m_pkthdr.csum_flags &= ~CSUM_SCTP;
}
@@ -617,12 +630,24 @@
* this is done in the normal processing path.
*/
if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA_IPV6) {
+ m = mb_unmapped_to_ext(m);
+ if (m == NULL) {
+ IPSEC6STAT_INC(ips_out_nomem);
+ key_freesp(&sp);
+ return (ENOBUFS);
+ }
in6_delayed_cksum(m, m->m_pkthdr.len -
sizeof(struct ip6_hdr), sizeof(struct ip6_hdr));
- m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA_IPV6;
+ m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA_IPV6;
}
#if defined(SCTP) || defined(SCTP_SUPPORT)
if (m->m_pkthdr.csum_flags & CSUM_SCTP_IPV6) {
+ m = mb_unmapped_to_ext(m);
+ if (m == NULL) {
+ IPSEC6STAT_INC(ips_out_nomem);
+ key_freesp(&sp);
+ return (ENOBUFS);
+ }
sctp_delayed_cksum(m, sizeof(struct ip6_hdr));
m->m_pkthdr.csum_flags &= ~CSUM_SCTP_IPV6;
}

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