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From: Helge Deller <deller@gmx.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org,
	Tianchu Chen <flynnnchen@tencent.com>, stable <stable@kernel.org>,
	Steve Glendinning <steve.glendinning@shawell.net>
Subject: Re: [PATCH] fbdev: smscufx: properly copy ioctl memory to kernelspace
Date: Tue, 30 Dec 2025 09:38:21 +0100	[thread overview]
Message-ID: <cf7dcdf8-6b81-4e80-b358-f20b2f0f576c@gmx.de> (raw)
In-Reply-To: <2025122802-radiance-vacancy-11da@gregkh>

On 12/28/25 14:17, Greg Kroah-Hartman wrote:
> The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from
> userspace to kernelspace, and instead directly references the memory,
> which can cause problems if invalid data is passed from userspace.  Fix
> this all up by correctly copying the memory before accessing it within
> the kernel.
> 
> Reported-by: Tianchu Chen <flynnnchen@tencent.com>
> Cc: stable <stable@kernel.org>
> Cc: Steve Glendinning <steve.glendinning@shawell.net>
> Cc: Helge Deller <deller@gmx.de>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>   drivers/video/fbdev/smscufx.c | 8 ++++++--
>   1 file changed, 6 insertions(+), 2 deletions(-)

applied to fbdev git tree.

Thanks!
Helge

      reply	other threads:[~2025-12-30  8:38 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-28 13:17 Greg Kroah-Hartman
2025-12-30  8:38 ` Helge Deller [this message]

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