Re: [patch] ipvs: info leak in __ip_vs_get_dest_entries()

[Simon Horman <horms@verge.net.au>]

On Mon, Jun 03, 2013 at 12:00:49PM +0300, Dan Carpenter wrote:
> The entry struct has a 2 byte hole after ->port and another 4 byte
> hole after ->stats.outpkts.  You must have CAP_NET_ADMIN in your
> namespace to hit this information leak.

Hi Dan,

can I verify that it is actually possible to hit this and
thus the patch is a -stable candidate?

> 
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> 
> diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
> index df05c1c..e336535 100644
> --- a/net/netfilter/ipvs/ip_vs_ctl.c
> +++ b/net/netfilter/ipvs/ip_vs_ctl.c
> @@ -2542,6 +2542,7 @@ __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get,
>  		struct ip_vs_dest *dest;
>  		struct ip_vs_dest_entry entry;
>  
> +		memset(&entry, 0, sizeof(entry));
>  		list_for_each_entry(dest, &svc->destinations, n_list) {
>  			if (count >= get->num_dests)
>  				break;
> --
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