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-rw-r--r--net/netfilter/nf_conntrack_core.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 94000a4c7dcf..e8b5c2d7db62 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -888,8 +888,13 @@ void nf_conntrack_alter_reply(struct nf_conn *ct,
NF_CT_DUMP_TUPLE(newreply);
ct->tuplehash[IP_CT_DIR_REPLY].tuple = *newreply;
- if (!ct->master && help && help->expecting == 0)
- help->helper = __nf_ct_helper_find(newreply);
+ if (!ct->master && help && help->expecting == 0) {
+ struct nf_conntrack_helper *helper;
+ helper = __nf_ct_helper_find(newreply);
+ if (helper)
+ memset(&help->help, 0, sizeof(help->help));
+ help->helper = helper;
+ }
write_unlock_bh(&nf_conntrack_lock);
}
EXPORT_SYMBOL_GPL(nf_conntrack_alter_reply);