From a3c960899e042bc1c2b730a2115fa32da7802039 Mon Sep 17 00:00:00 2001
From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Wed, 4 Jun 2008 01:30:25 +0900
Subject: [PATCH] [IPV6] UDP: Possible dst leak in udpv6_sendmsg.
ip6_sk_dst_lookup returns held dst entry. It should be released
on all paths beyond this point. Add missed release when up->pending
is set.
Bug report and initial patch by Denis V. Lunev <den@openvz.org>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: Denis V. Lunev <den@openvz.org>
---
net/ipv6/udp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1fd784f3e2ecf4..47123bf5eb0fb4 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -848,12 +848,14 @@ do_append_data:
} else {
dst_release(dst);
}
+ dst = NULL;
}
if (err > 0)
err = np->recverr ? net_xmit_errno(err) : 0;
release_sock(sk);
out:
+ dst_release(dst);
fl6_sock_release(flowlabel);
if (!err)
return len;
--
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