linux-kernel - Re: [PATCH] scsi: aacraid: Allocate cmd

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Message-ID: <4504517a-25f0-5626-7dc3-50e96f392c84@acm.org>
Date:   Mon, 30 Jan 2023 10:19:16 -0800
From:   Bart Van Assche <bvanassche@....org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Hannes Reinecke <hare@...e.de>,
        Himanshu Madhani <himanshu.madhani@...cle.com>,
        Adaptec OEM Raid Solutions <aacraid@...rosemi.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] scsi: aacraid: Allocate cmd_priv with scsicmd

On 1/27/23 16:04, Kees Cook wrote:
> The aac_priv() helper assumes that the private cmd area immediately
> follows struct scsi_cmnd. Allocate this space as part of scsicmd,
> else there is a risk of heap overflow. Seen with GCC 13: [ ... ]

Bart Van Assche <bvanassche@....org>