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authorDavid S. Miller <davem@davemloft.net>2011-05-17 14:18:25 -0400
committerDavid S. Miller <davem@davemloft.net>2011-05-17 14:18:25 -0400
commit30b9284db3c77a5e20bb826cd1b66ed7b26cb726 (patch)
tree95557fc43645512f91670b2e07dc6fabcc0a31fe /net/netfilter
parent372b2312010bece1e36f577d6c99a6193ec54cbd (diff)
parente6e4d9ed11fb1fab8b3256a3dc14d71b5e984ac4 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
Diffstat (limited to 'net/netfilter')
-rw-r--r--net/netfilter/nf_conntrack_sip.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 237cc1981b89..cb5a28581782 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1419,6 +1419,7 @@ static int sip_help_tcp(struct sk_buff *skb, unsigned int protoff,
const char *dptr, *end;
s16 diff, tdiff = 0;
int ret = NF_ACCEPT;
+ bool term;
typeof(nf_nat_sip_seq_adjust_hook) nf_nat_sip_seq_adjust;
if (ctinfo != IP_CT_ESTABLISHED &&
@@ -1453,14 +1454,21 @@ static int sip_help_tcp(struct sk_buff *skb, unsigned int protoff,
if (dptr + matchoff == end)
break;
- if (end + strlen("\r\n\r\n") > dptr + datalen)
- break;
- if (end[0] != '\r' || end[1] != '\n' ||
- end[2] != '\r' || end[3] != '\n')
+ term = false;
+ for (; end + strlen("\r\n\r\n") <= dptr + datalen; end++) {
+ if (end[0] == '\r' && end[1] == '\n' &&
+ end[2] == '\r' && end[3] == '\n') {
+ term = true;
+ break;
+ }
+ }
+ if (!term)
break;
end += strlen("\r\n\r\n") + clen;
msglen = origlen = end - dptr;
+ if (msglen > datalen)
+ return NF_DROP;
ret = process_sip_msg(skb, ct, dataoff, &dptr, &msglen);
if (ret != NF_ACCEPT)