linux-hardening - Re: [PATCH][next] sctp: Fix out-of-bounds warning in sctp_process_asconf

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Date:   Mon, 19 Apr 2021 15:34:05 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     gustavo@...eddedor.com
Cc:     patchwork-bot+netdevbpf@...nel.org, gustavoars@...nel.org,
        vyasevich@...il.com, nhorman@...driver.com,
        marcelo.leitner@...il.com, kuba@...nel.org,
        linux-sctp@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] sctp: Fix out-of-bounds warning in
 sctp_process_asconf_param()

From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Date: Fri, 16 Apr 2021 19:07:05 -0500

> Dave,
> 
> On 4/16/21 19:00, patchwork-bot+netdevbpf@...nel.org wrote:
>> Hello:
>> 
>> This patch was applied to netdev/net-next.git (refs/heads/master):
>> 
>> On Fri, 16 Apr 2021 14:12:36 -0500 you wrote:
>>> Fix the following out-of-bounds warning:
>>>
>>> net/sctp/sm_make_chunk.c:3150:4: warning: 'memcpy' offset [17, 28] from the object at 'addr' is out of the bounds of referenced subobject 'v4' with type 'struct sockaddr_in' at offset 0 [-Warray-bounds]
>>>
>>> This helps with the ongoing efforts to globally enable -Warray-bounds
>>> and get us closer to being able to tighten the FORTIFY_SOURCE routines
>>> on memcpy().
>>>
>>> [...]
>> 
>> Here is the summary with links:
>>   - [next] sctp: Fix out-of-bounds warning in sctp_process_asconf_param()
>>     https://git.kernel.org/netdev/net-next/c/e5272ad4aab3
> 
> Thanks for this. Can you take these other two, as well, please?
> 
> https://lore.kernel.org/linux-hardening/20210416201540.GA593906@embeddedor/
> https://lore.kernel.org/linux-hardening/20210416193151.GA591935@embeddedor/
> 

Done.