linux-kernel - Re: [Linux-kernel-mentees] [PATCH] media/v4l2-core: Fix kernel-infoleak in video_put

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Message-ID: <20200726181222.GB49356@PWN>
Date:   Sun, 26 Jul 2020 14:12:22 -0400
From:   Peilin Ye <yepeilin.cs@...il.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        syzkaller-bugs@...glegroups.com,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Arnd Bergmann <arnd@...db.de>,
        Vandana BN <bnvandana@...il.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Linux-kernel-mentees] [PATCH] media/v4l2-core: Fix
 kernel-infoleak in video_put_user()

Sorry, by this code example:

        char *p = (char *)&vb32;
        int i;

        for (i = 0; i < sizeof(struct vb32); i++, p++)
                printk("*(p + i): %d", *(p + i));

actually I meant:

        char *p = (char *)&vb32;
        int i;

        for (i = 0; i < sizeof(struct vb32); i++)
                printk("*(p + i): %d", *(p + i));

But the idea is the same.

Thank you,
Peilin Ye