linux-kernel - Re: [PATCH v1] xfrm: add forgotten nla_policy for XFRMA_MTIMER

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Message-ID: <20230730105238.GB94048@unreal>
Date:   Sun, 30 Jul 2023 13:52:38 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Lin Ma <linma@....edu.cn>
Cc:     steffen.klassert@...unet.com, herbert@...dor.apana.org.au,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] xfrm: add forgotten nla_policy for XFRMA_MTIMER_THRESH

On Wed, Jul 26, 2023 at 09:32:43PM +0800, Lin Ma wrote:
> Hello Leon,
> 
> > 
> > This CVE is a joke, you need to be root to execute this attack.
> > 
> 
> Not really, this call routine only checks
> 
>   if (!netlink_net_capable(skb, CAP_NET_ADMIN))
>     return -EPERM;
> 
> and any users in most vendor kernel can create a network namespace to
> get such privilege and trigger this bug.

ok, fair enough.

> 
> > Anyway change is ok.
> > Reviewed-by: Leon Romanovsky <leonro@...dia.com>
> 
> Regards
> Lin