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Bug#923988: /boot/vmlinuz-4.19.0-2-arm64: dmidecode causes kernel panic (puma-rk3399)



On Tue, 2019-03-12 at 19:04 +0100, Christoph Müllner wrote:
> I've been able to reproduce and analyse this issue.
> 
> The security error seems to be valid.
[...]

I don't see a security issue here.  The kernel does not and should not
stop root breaking the system with direct access to /dev/mem, *unless*
Secure Boot / lockdown is active - and in that case access to /dev/mem
is blocked completely.

Ben.

-- 
Ben Hutchings
Larkinson's Law: All laws are basically false.


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