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net/sched: act_ct: Fix skb double-free in tcf_ct_handle_fragments() error flow
[ Upstream commit eda814b97dfb8d9f4808eb2f65af9bd3705c4cae ]
tcf_ct_handle_fragments() shouldn't free the skb when ip_defrag() call
fails. Otherwise, we will cause a double-free bug.
In such cases, just return the error to the caller.
Fixes: b57dc7c13e
("net/sched: Introduce action ct")
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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@ -186,7 +186,7 @@ static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb,
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memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm));
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err = nf_ct_frag6_gather(net, skb, user);
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if (err && err != -EINPROGRESS)
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goto out_free;
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return err;
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#else
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err = -EOPNOTSUPP;
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goto out_free;
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