It has been

0

days since a forgotten 'S' suffix on an ARM instruction cost me a debugging session

#Assembly #ARM

I'm looking for a tiny, capable ARM SBC for my home network that is fully supported by FreeBSD.

The RockPi or Pine64 looks promising. Can anyone confirm these work well without jumping through hoops?

#FreeBSD #RockPi #Pine64 #ARM #SBC

The difference is quite huge under heavy transfer load… rsync runs on "yellow" Intel machine and rsyncs data from it’s local storage to the remote "blue" arm64 one. Not sure if that explains the power usage difference 🤔 #arm #FreeBSD

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Two power consumption graphs while transferring data from one server to the other.

This shows a power consumption difference while transferring (at 500Mbps-1Gbps using rsync/ssh) data from a WD 16TB with Intel N150 to a WD 16TB with ARM Cortex-A53. And makes me confident migrating to #arm is a good idea - power consumption wise. Both run #FreeBSD 14 BTW.

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Two graphs showing power consumption.

code.fail: C Version with x86+ARM shellcode

Here is an exploit written in C for the the copy.fail (https://copy.fail/, CVE-2026-31431) vulnerability. The embedded shellcode works on other CPUs than X86, with ARM as a primary target.

Code: https://github.com/huberteff/copy-fail-CVE-2026-31431/
Technical writeup: https://www.feyrer.de/redir/copy.fail-C-version-Writeup.html

#copyfail #exploit #c #arm #x86 #cybersecurity

The exploit includes cpu-specific shell code (ELF). I have the toolchain working to build working shell code and the exploit binary on both Linux/86 and Linux/ARM, but the exploit doesn't work out of the box on ARM.

Anyone got further details if this vulnerability is only valid for x86?

#arm #copyfail #linux #exploit #x86

Our Morello system has arrived!

#CHERI #ARM #Morello #capabilities

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A very large PC case containing a rather small ARM Morello board. A CHERI cap is sitting on top.