linux-kernel - Re: [PATCH] drm/amd/display: Check link

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Message-ID: <2025012309-chloride-foil-ad73@gregkh>
Date: Thu, 23 Jan 2025 15:10:23 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Shubham Pushpkar <spushpka@...co.com>
Cc: stable@...r.kernel.org, linux-kernel@...r.kernel.org,
	deeratho@...co.com, Harry Wentland <harry.wentland@....com>,
	Tom Chung <chiahsuan.chung@....com>,
	Daniel Wheeler <daniel.wheeler@....com>
Subject: Re: [PATCH] drm/amd/display: Check link_index before accessing
 dc->links[]

On Thu, Jan 23, 2025 at 04:08:22AM -0800, Shubham Pushpkar wrote:
> From: Alex Hung <alex.hung@....com>
> 
> commit 8aa2864044b9d13e95fe224f32e808afbf79ecdf ("drm/amd/display:
> Check link_index before accessing dc->links[]")
> 
> [WHY & HOW]
> dc->links[] has max size of MAX_LINKS and NULL is return when trying to
> access with out-of-bound index.
> 
> This fixes 3 OVERRUN and 1 RESOURCE_LEAK issues reported by Coverity.
> 
> Fixes: CVE-2024-46813
> Reviewed-by: Harry Wentland <harry.wentland@....com>
> Acked-by: Tom Chung <chiahsuan.chung@....com>
> Signed-off-by: Alex Hung <alex.hung@....com>
> Tested-by: Daniel Wheeler <daniel.wheeler@....com>
> Signed-off-by: Alex Deucher <alexander.deucher@....com>
> (cherry picked from commit 8aa2864044b9d13e95fe224f32e808afbf79ecdf)
> Signed-off-by: Shubham Pushpkar <spushpka@...co.com>
> ---
>  drivers/gpu/drm/amd/display/dc/core/dc_link_exports.c | 3 +++
>  1 file changed, 3 insertions(+)

What branch is this for?

thanks,

greg k-h