linux-kernel - RE: [PATCH] firmware: export x86_64 platform flash bios region via sysfs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5ee9e467bfbf49d29cb54679d2dce1c3@AcuMS.aculab.com>
Date:   Tue, 22 Jun 2021 22:18:29 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Hans-Gert Dahmen' <hans-gert.dahmen@...u.ne>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "philipp.deppenwiese@...u.ne" <philipp.deppenwiese@...u.ne>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: RE: [PATCH] firmware: export x86_64 platform flash bios region via
 sysfs

From: Hans-Gert Dahmen
> Sent: 22 June 2021 15:24
> 
> Make the 16MiB long memory-mapped BIOS region of the platform SPI flash
> on X86_64 system available via /sys/kernel/firmware/flash_mmap/bios_region
> for pen-testing, security analysis and malware detection on kernels
> which restrict module loading and/or access to /dev/mem.

Are you saying that my 15 year old 64bit Athlon cpu and bios
have this large SPI flash and the required hardware to
convert bus cycles to serial spi reads?

I very much doubt it.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)