This is a note to let you know that I've just added the patch titled
netfilter: Fix potential use after free in ip6_route_me_harder()
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
netfilter-fix-potential-use-after-free-in-ip6_route_me_harder.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a8951d5814e1373807a94f79f7ccec7041325470 Mon Sep 17 00:00:00 2001
From: Sergey Popovich <popovich_sergei@xxxxxxx>
Date: Thu, 8 May 2014 16:22:35 +0300
Subject: netfilter: Fix potential use after free in ip6_route_me_harder()
From: Sergey Popovich <popovich_sergei@xxxxxxx>
commit a8951d5814e1373807a94f79f7ccec7041325470 upstream.
Dst is released one line before we access it again with dst->error.
Fixes: 58e35d147128 netfilter: ipv6: propagate routing errors from
ip6_route_me_harder()
Signed-off-by: Sergey Popovich <popovich_sergei@xxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv6/netfilter.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -30,13 +30,15 @@ int ip6_route_me_harder(struct sk_buff *
.daddr = iph->daddr,
.saddr = iph->saddr,
};
+ int err;
dst = ip6_route_output(net, skb->sk, &fl6);
- if (dst->error) {
+ err = dst->error;
+ if (err) {
IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES);
LIMIT_NETDEBUG(KERN_DEBUG "ip6_route_me_harder: No more route.\n");
dst_release(dst);
- return dst->error;
+ return err;
}
/* Drop old route. */
Patches currently in stable-queue which might be from popovich_sergei@xxxxxxx are
queue-3.14/netfilter-fix-potential-use-after-free-in-ip6_route_me_harder.patch
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