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

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Message-ID: <CA+icZUWHU=oXOEj5wHTzxrw_wj1w5hTvqq8Ry400s0ZCJjTEZw@mail.gmail.com>
Date: Thu, 19 Dec 2024 17:14:28 +0100
From: Sedat Dilek <sedat.dilek@...il.com>
To: Juergen Gross <jgross@...e.com>, Peter Zijlstra <peterz@...radead.org>, 
	Andrew Cooper <andrew.cooper3@...rix.com>, Sami Tolvanen <samitolvanen@...gle.com>
Cc: Jan Beulich <jbeulich@...e.com>, Josh Poimboeuf <jpoimboe@...hat.com>, 
	Linus Torvalds <torvalds@...ux-foundation.org>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.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: [Linux-6.12.y] XEN: CVE-2024-53241 / XSA-466 and Clang-kCFI

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.

...when someone uses Clang-kCFI?

My full kernel-config is attached.

Thanks in advance.

Best regards,
-Sedat-

https://xenbits.xen.org/xsa/advisory-466.html
https://www.phoronix.com/news/Xen-XSA-466-Linux
https://mirrors.edge.kernel.org/pub/tools/llvm/files/

Download attachment "config-6.12.5-1-amd64-clang19-kcfi" of type "application/octet-stream" (281153 bytes)