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authorDan Carpenter <dan.carpenter@oracle.com>2019-04-02 09:53:14 +0300
committerDavid S. Miller <davem@davemloft.net>2019-04-02 10:56:21 -0700
commit6d670497e01803b486aa72cc1a718401ab986896 (patch)
treeb6c04cf9dbf218980ee7c25b16dd0449e817e77c /net/openvswitch
parentf0dfecc93a60d6ac2acae886103ee0449a25a9c9 (diff)
openvswitch: use after free in __ovs_ct_free_action()
We free "ct_info->ct" and then use it on the next line when we pass it to nf_ct_destroy_timeout(). This patch swaps the order to avoid the use after free. Fixes: 06bd2bdf19d2 ("openvswitch: Add timeout support to ct action") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Yi-Hung Wei <yihung.wei@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch')
-rw-r--r--net/openvswitch/conntrack.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index 121b01d4a3c0..0be3ab5bde26 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -1804,9 +1804,9 @@ static void __ovs_ct_free_action(struct ovs_conntrack_info *ct_info)
if (ct_info->helper)
nf_conntrack_helper_put(ct_info->helper);
if (ct_info->ct) {
- nf_ct_tmpl_free(ct_info->ct);
if (ct_info->timeout[0])
nf_ct_destroy_timeout(ct_info->ct);
+ nf_ct_tmpl_free(ct_info->ct);
}
}