diff options
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_proto_sctp.c | 11 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_proto_sctp.c | 11 |
2 files changed, 14 insertions, 8 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c index be602e8aeab..df67679a063 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c @@ -235,12 +235,15 @@ static int do_basic_checks(struct ip_conntrack *conntrack, flag = 1; } - /* Cookie Ack/Echo chunks not the first OR - Init / Init Ack / Shutdown compl chunks not the only chunks */ - if ((sch->type == SCTP_CID_COOKIE_ACK + /* + * Cookie Ack/Echo chunks not the first OR + * Init / Init Ack / Shutdown compl chunks not the only chunks + * OR zero-length. + */ + if (((sch->type == SCTP_CID_COOKIE_ACK || sch->type == SCTP_CID_COOKIE_ECHO || flag) - && count !=0 ) { + && count !=0) || !sch->length) { DEBUGP("Basic checks failed\n"); return 1; } diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index cf798e61e37..cd2326dde02 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -240,12 +240,15 @@ static int do_basic_checks(struct nf_conn *conntrack, flag = 1; } - /* Cookie Ack/Echo chunks not the first OR - Init / Init Ack / Shutdown compl chunks not the only chunks */ - if ((sch->type == SCTP_CID_COOKIE_ACK + /* + * Cookie Ack/Echo chunks not the first OR + * Init / Init Ack / Shutdown compl chunks not the only chunks + * OR zero-length. + */ + if (((sch->type == SCTP_CID_COOKIE_ACK || sch->type == SCTP_CID_COOKIE_ECHO || flag) - && count !=0 ) { + && count !=0) || !sch->length) { DEBUGP("Basic checks failed\n"); return 1; } |