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Message-ID: <8cb46dd1-c2eb-869a-0af8-443d84a83b85@gmail.com>
Date:   Tue, 15 Feb 2022 13:51:10 -0800
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Subject: Re: 4 missing check bugs
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To:     Jinmeng Zhou <jjjinmeng.zhou@gmail.com>, marcel@holtmann.org,
        johan.hedberg@gmail.com, davem@davemloft.net,
        Jakub Kicinski <kuba@kernel.org>
Cc:     linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org,
        shenwenbosmile@gmail.com
References: <CAA-qYXiUFi5atN8tGRdORbiGqWnbdquuAeKuwdpWSVFVO2FveA@mail.gmail.com>
From:   Eric Dumazet <eric.dumazet@gmail.com>
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On 2/15/22 04:37, Jinmeng Zhou wrote:
> Dear maintainers,
>
> Hi, our tool finds several missing check bugs on
> Linux kernel v4.18.5 using static analysis.
> We are looking forward to having more experts' eyes on this. Thank you!
>
> Before calling sk_alloc() with SOCK_RAW type,
> there should be a permission check, ns_capable(ns,CAP_NET_RAW).
> For example,


v4.18 is not a stable kernel.

No one is supposed to use v4.18.5, and expect others to fix bugs in it.