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netfilter: ip6t_REJECT: fix a dst leak in ipv6 REJECT

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commit 499031ac8a upstream.

We should release dst if dst->error is set.

Bug introduced in 2.6.14 by commit e104411b82
([XFRM]: Always release dst_entry on error in xfrm_lookup)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Eric Dumazet 2010-07-02 10:05:01 +02:00 • committed by Greg Kroah-Hartman
commit bebd876038
1 changed files with 4 additions and 2 deletions
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6
net/ipv6/netfilter/ip6t_REJECT.c
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@ -95,9 +95,11 @@ static void send_reset(struct net *net, struct sk_buff *oldskb)
fl.fl_ip_dport = otcph.source;
security_skb_classify_flow(oldskb, &fl);
dst = ip6_route_output(net, NULL, &fl);
if (dst == NULL)
if (dst == NULL || dst->error) {
dst_release(dst);
return;
if (dst->error || xfrm_lookup(net, &dst, &fl, NULL, 0))
}
if (xfrm_lookup(net, &dst, &fl, NULL, 0))
return;
hh_len = (dst->dev->hard_header_len + 15)&~15;