linux-hardening - Re: [PATCH] IB/rdmavt: Fix target union member for rvt_post_one

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Date:   Mon, 13 Mar 2023 13:57:05 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
        Kees Cook <keescook@...omium.org>
Cc:     Zhang Yi <yizhan@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH] IB/rdmavt: Fix target union member for rvt_post_one_wr()


On Sat, 18 Feb 2023 10:57:05 -0800, Kees Cook wrote:
> The "cplen" result used by the memcpy() into struct rvt_swqe "wqe" may
> be sized to 80 for struct rvt_ud_wr (which is member "ud_wr", not "wr"
> which is only 40 bytes in size). Change the destination union member so
> the compiler can use the correct bounds check.
> 
> struct rvt_swqe {
>         union {
>                 struct ib_send_wr wr;   /* don't use wr.sg_list */
>                 struct rvt_ud_wr ud_wr;
> 		...
> 	};
> 	...
> };
> 
> [...]

Applied, thanks!

[1/1] IB/rdmavt: Fix target union member for rvt_post_one_wr()
      https://git.kernel.org/rdma/rdma/c/f2f6e1661d38fb

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