linux-kernel - Re: [Linux-6.12.y] XEN: CVE-2024-53241 / XSA-466 and Clang-kCFI

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Message-ID: <2024121902-eggnog-playmaker-6552@gregkh>
Date: Thu, 19 Dec 2024 17:36:20 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Sedat Dilek <sedat.dilek@...il.com>
Cc: Juergen Gross <jgross@...e.com>, Peter Zijlstra <peterz@...radead.org>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Jan Beulich <jbeulich@...e.com>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, Kees Cook <kees@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>, llvm@...ts.linux.dev
Subject: Re: [Linux-6.12.y] XEN: CVE-2024-53241 / XSA-466 and Clang-kCFI

On Thu, Dec 19, 2024 at 05:14:28PM +0100, Sedat Dilek wrote:
> Hi,
> 
> Linux v6.12.6 will include XEN CVE fixes from mainline.
> 
> Here, I use Debian/unstable AMD64 and the SLIM LLVM toolchain 19.1.x
> from kernel.org.
> 
> What does it mean in ISSUE DESCRIPTION...
> 
> Furthermore, the hypercall page has no provision for Control-flow
> Integrity schemes (e.g. kCFI/CET-IBT/FineIBT), and will simply
> malfunction in such configurations.

WHat is the error that you get?

> ...when someone uses Clang-kCFI?
> 
> My full kernel-config is attached.

You don't show the error, please do so.

thanks,

greg k-h