linux-hardening - Re: [PATCH v3][next] RDMA/core: Use size_{add,sub,mul}() in calls to struct

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Message-Id: <169510905734.14896.2991454817672701344.b4-ty@kernel.org>
Date:   Tue, 19 Sep 2023 10:37:37 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Jason Gunthorpe <jgg@...pe.ca>, Parav Pandit <parav@...lanox.com>,
        Jack Morgenstein <jackm@...lanox.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH v3][next] RDMA/core: Use size_{add,sub,mul}() in calls to
 struct_size()


On Sun, 17 Sep 2023 15:21:36 -0600, Gustavo A. R. Silva wrote:
> If, for any reason, the open-coded arithmetic causes a wraparound,
> the protection that `struct_size()` provides against potential integer
> overflows is defeated. Fix this by hardening calls to `struct_size()`
> with `size_add()`, `size_sub()` and `size_mul()`.
> 
> 

Applied, thanks!

[1/1] RDMA/core: Use size_{add,sub,mul}() in calls to struct_size()
      https://git.kernel.org/rdma/rdma/c/81760bedc65194

Best regards,
-- 
Leon Romanovsky <leon@...nel.org>