From: Denis V. Lunev <den@openvz.org>
Date: Tue, 19 Feb 2008 04:49:36 +0000 (-0800)
Subject: [IPV6]: dst_entry leak in ip4ip6_err. (resend)
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9937ded8e44de8865cba1509d24eea9d350cebf0;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[IPV6]: dst_entry leak in ip4ip6_err. (resend)

The result of the ip_route_output is not assigned to skb. This means that
- it is leaked
- possible OOPS below dereferrencing skb->dst
- no ICMP message for this case

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 9031e521c1df..cd940647bd12 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -550,6 +550,7 @@ ip4ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 			ip_rt_put(rt);
 			goto out;
 		}
+		skb2->dst = (struct dst_entry *)rt;
 	} else {
 		ip_rt_put(rt);
 		if (ip_route_input(skb2, eiph->daddr, eiph->saddr, eiph->tos,