Re: [PATCH net-next v2 0/3] netlink: strict attribute checking follow-up
From: David Miller
Date: Sat May 04 2019 - 01:28:40 EST
From: Michal Kubecek <mkubecek@xxxxxxx>
Date: Thu, 2 May 2019 16:15:10 +0200 (CEST)
> Three follow-up patches for recent strict netlink validation series.
> Patch 1 fixes dump handling for genetlink families which validate and parse
> messages themselves (e.g. because they need different policies for diferent
> Patch 2 sets bad_attr in extack in one place where this was omitted.
> Patch 3 adds new NL_VALIDATE_NESTED flags for strict validation to enable
> checking that NLA_F_NESTED value in received messages matches expectations
> and includes this flag in NL_VALIDATE_STRICT. This would change userspace
> visible behavior but the previous switching to NL_VALIDATE_STRICT for new
> code is still only in net-next at the moment.
> v2: change error messages to mention NLA_F_NESTED explicitly