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Date: Mon, 6 Jul 2026 14:08:57 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Jiucheng Xu <jiucheng.xu@amlogic.com>
Cc: stable@vger.kernel.org
Subject: Re: f2fs: fix UAF issue in f2fs_merge_page_bio()
Message-ID: <2026070631-vaporizer-viability-d57f@gregkh>
References: <e6003504-96f1-4dc8-9e6b-e17c8f809d75@amlogic.com>
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In-Reply-To: <e6003504-96f1-4dc8-9e6b-e17c8f809d75@amlogic.com>

On Mon, Jul 06, 2026 at 04:52:12PM +0800, Jiucheng Xu wrote:
> Dear maintainers,
> 
> A f2fs patch should be backported from upstream mainline to the stable
> 5.15.y branches. The patch's information is shown as below:
> 
> [Subject]
> f2fs: fix UAF issue in f2fs_merge_page_bio()
> 
> [Upstream commit ID]
> edf7e9040fc52c922db947f9c6c36f07377c52ea
> 
> [Kernel version]
> 5.15.y
> 
> [Why]
> We encountered the same issue on the 5.15 kernel version. After referring to
> the modifications in the upstream, the issue was solved.

Great, please provide a working backport that you have tested for this
branch, and all of the newer stable branches, and we will be glad to
apply it.  As-is, it does not apply at all.

thanks,

greg k-h