Commit 0f81eb4d authored by Harald Welte's avatar Harald Welte Committed by Arnaldo Carvalho de Melo

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

It's not necessary to free skb if netlink_unicast() failed.
Signed-off-by: default avatarYasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: default avatarHarald Welte <laforge@netfilter.org>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@mandriva.com>
parent d2a7bb71
......@@ -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;
out:
if (skb2)
free:
kfree_skb(skb2);
out:
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;
goto free;
ip_conntrack_expect_put(exp);
err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
if (err < 0)
goto free;
return err;
return netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
out:
ip_conntrack_expect_put(exp);
free:
if (skb2)
kfree_skb(skb2);
out:
ip_conntrack_expect_put(exp);
return err;
}
......
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