[libvirt] [PATCH] virNetworkLoadState: Disallow mangled 'floor' element
Eric Blake
eblake at redhat.com
Mon Feb 10 18:52:30 UTC 2014
On 02/10/2014 11:30 AM, Michal Privoznik wrote:
> In the network status XML we may have the <floor/> element with the
> 'sum' attribute. The attribute represents sum of all 'floor'-s of
> computed over each interface connected to the network (this is needed to
> guarantee certain bandwidth for certain domain). The sum is therefore a
> number. However, if the number was mangled (e.g. by an user's
> interference to network status file), we've just ignored it without
> refusing to parse such file. This was all due to 'goto error' missing.
>
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---
> src/conf/network_conf.c | 1 +
> 1 file changed, 1 insertion(+)
ACK.
>
> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
> index e59938c..dd3fa19 100644
> --- a/src/conf/network_conf.c
> +++ b/src/conf/network_conf.c
> @@ -2959,6 +2959,7 @@ virNetworkLoadState(virNetworkObjListPtr nets,
> _("Malformed 'floor_sum' attribute: %s"),
> floor_sum);
> VIR_FREE(floor_sum);
> + goto error;
> }
> VIR_FREE(floor_sum);
Thankfully, our VIR_FREE prevented a double free() :)
> }
>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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