linux-kernel - Re: CVE-2024-27406: lib/Kconfig.debug: TEST_IOV

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Message-ID: <ot4g5zxesgwpzbgvb7yjazsgdxojktdph42qbw6pik3tvyswhj@kdo44nmnwwcq>
Date: Fri, 17 May 2024 19:42:14 +0200
From: Michal Koutný <mkoutny@...e.com>
To: cve@...nel.org, linux-kernel@...r.kernel.org
Cc: linux-cve-announce@...r.kernel.org, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: CVE-2024-27406: lib/Kconfig.debug: TEST_IOV_ITER depends on MMU

On Fri, May 17, 2024 at 01:40:41PM GMT, Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote:
> BUG: failure at mm/nommu.c:318/vmap()!
> Kernel panic - not syncing: BUG!
> 
> The test calls vmap() directly, but vmap() is not supported on nommu
> systems, causing the crash.  TEST_IOV_ITER therefore needs to depend on
> MMU.

This is fixing mising assumption of a testing module.
The BUG is deserved AFAIU. The CVE should be reverted IMO.


Thanks,
Michal

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