linux-kernel - Re: [PATCH 6/6] misc: fastrpc: Restrict untrusted app to attach to privileged PD

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Message-ID: <2024081513-aware-tutor-e119@gregkh>
Date: Thu, 15 Aug 2024 10:41:15 +0200
From: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
To: Joel Selvaraj <joelselvaraj.oss@...il.com>
Cc: "srinivas.kandagatla@...aro.org" <srinivas.kandagatla@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ekansh Gupta <quic_ekangupt@...cinc.com>,
	stable <stable@...nel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH 6/6] misc: fastrpc: Restrict untrusted app to attach to
 privileged PD

On Thu, Aug 15, 2024 at 03:35:13AM -0500, Joel Selvaraj wrote:
> Hi greg k-h,
> 
> The git commit id is: bab2f5e8fd5d2f759db26b78d9db57412888f187
> 
> But I am bit hesitant if we should revert it because there is a CVE attached
> to it: https://ubuntu.com/security/CVE-2024-41024

Not an issue if it is breaking things, let's get it right.  We can
trivially reject that CVE if needed.

> Also, I am ok with changing userspace if it's necessary. It would be nice if
> the authors can clarify the ideal fix here.

No, userspace should not break, that's not ok at all.  I'll get someone
to revert this later today, thanks!

greg k-h