Patch "netfilter: xt_NFLOG: fix unexpected truncated packet" has been added to the 4.8-stable tree

Patch "netfilter: xt_NFLOG: fix unexpected truncated packet" has been added to the 4.8-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    netfilter: xt_NFLOG: fix unexpected truncated packet

to the 4.8-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-xt_nflog-fix-unexpected-truncated-packet.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 6d19375b58763fefc2f215fb45117d3353ced888 Mon Sep 17 00:00:00 2001
From: Liping Zhang <liping.zhang@spreadtrum.com>
Date: Tue, 11 Oct 2016 21:03:45 +0800
Subject: netfilter: xt_NFLOG: fix unexpected truncated packet

From: Liping Zhang <liping.zhang@spreadtrum.com>

commit 6d19375b58763fefc2f215fb45117d3353ced888 upstream.

Justin and Chris spotted that iptables NFLOG target was broken when they
upgraded the kernel to 4.8: "ulogd-2.0.5- IPs are no longer logged" or
"results in segfaults in ulogd-2.0.5".

Because "struct nf_loginfo li;" is a local variable, and flags will be
filled with garbage value, not inited to zero. So if it contains 0x1,
packets will not be logged to the userspace anymore.

Fixes: 7643507fe8b5 ("netfilter: xt_NFLOG: nflog-range does not truncate packets")
Reported-by: Justin Piszcz <jpiszcz@lucidpixels.com>
Reported-by: Chris Caputo <ccaputo@alt.net>
Tested-by: Chris Caputo <ccaputo@alt.net>
Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/netfilter/xt_NFLOG.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/netfilter/xt_NFLOG.c
+++ b/net/netfilter/xt_NFLOG.c
@@ -32,6 +32,7 @@ nflog_tg(struct sk_buff *skb, const stru
 	li.u.ulog.copy_len   = info->len;
 	li.u.ulog.group	     = info->group;
 	li.u.ulog.qthreshold = info->threshold;
+	li.u.ulog.flags	     = 0;
 
 	if (info->flags & XT_NFLOG_F_COPY_LEN)
 		li.u.ulog.flags |= NF_LOG_F_COPY_LEN;


Patches currently in stable-queue which might be from liping.zhang@spreadtrum.com are

queue-4.8/netfilter-xt_nflog-fix-unexpected-truncated-packet.patch