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[NETFILTER]: Fix double free after netlink_unicast() in ctnetlink

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It's not necessary to free skb if netlink_unicast() failed.

Signed-off-by: Yasuyuki Kozakai <[email protected]>
Signed-off-by: Harald Welte <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Harald Welte 2005-11-03 19:05:37 +01:00 • committed by Arnaldo Carvalho de Melo
commit 0f81eb4db4
1 changed files with 7 additions and 12 deletions
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21
net/ipv4/netfilter/ip_conntrack_netlink.c
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@ -815,7 +815,7 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
IPCTNL_MSG_CT_NEW, 1, ct);
ip_conntrack_put(ct);
if (err <= 0)
goto out;
goto free;
err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
if (err < 0)
@ -824,9 +824,9 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
DEBUGP("leaving\n");
return 0;
free:
kfree_skb(skb2);
out:
if (skb2)
kfree_skb(skb2);
return -1;
}
@ -1322,21 +1322,16 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW,
1, exp);
if (err <= 0)
goto out;
ip_conntrack_expect_put(exp);
err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
if (err < 0)
goto free;
return err;
ip_conntrack_expect_put(exp);
return netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
free:
kfree_skb(skb2);
out:
ip_conntrack_expect_put(exp);
free:
if (skb2)
kfree_skb(skb2);
return err;
}