Re: [PATCH] Fix handling of verdicts after NF_QUEUE

On Thu, Dec 14, 2017 at 01:30:08PM +0100, Pablo Neira Ayuso wrote:

Hi Greg,

I'd appreciate if you can take this patch into 4.9-stable. There is no
similar patch in tree, so this is not a backport.

On Wed, Dec 13, 2017 at 03:33:37PM -0500, Debabrata Banerjee wrote:

quoted

A verdict of NF_STOLEN after NF_QUEUE will cause an incorrect return value
and a potential kernel panic via double free of skb's

This was broken by commit 7034b566a4e7 ("netfilter: fix nf_queue handling")
and subsequently fixed in v4.10 by commit c63cbc460419 ("netfilter:
use switch() to handle verdict cases from nf_hook_slow()"). However that
commit cannot be cleanly cherry-picked to v4.9

Signed-off-by: Debabrata Banerjee <redacted>

Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>

Thanks a lot!

Now applied, thanks.

greg k-h