Function ovs_ct_limit_cmd_get() defined in net/openvswitch/conntrack.c may
cause a null pointer dereference as it calls nla_nest_start which may return
NULL. The returned value is used in function nla_nest_end() later where the
pointer is dereferenced.
---
net/openvswitch/conntrack.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index 284aca2..dad0456 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -2132,6 +2132,10 @@ static int ovs_ct_limit_cmd_get(struct sk_buff *skb,
struct genl_info *info)
return PTR_ERR(reply);
nla_reply = nla_nest_start(reply, OVS_CT_LIMIT_ATTR_ZONE_LIMIT);
+ if (!nla_reply) {
+ err = -ENOMEM;
+ goto exit_err;
+ }
if (a[OVS_CT_LIMIT_ATTR_ZONE_LIMIT]) {
err = ovs_ct_limit_get_zone_limit(
--
2.6.4
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