Super cool. Also, love reading high quality linux patches. I think many, myself previously included, are afraid to even read the kernel source as one thinks it must be super complex. Of course some parts really are. However, the code is honestly of such high quality. I also highly value that feeling of realizing something once thought 'arcane' was actually only made by other humans, and it is legal to go read it and learn from it.
PeterWhittaker 4 hours ago||
Clever! I know some will say it's like closing the barn door after the horse left, but having this in place to mitigate future vulnerabilities will be handy.
cyanydeez 3 hours ago|
ok, but what kind of nefarious use case will it enable if it is accessible to malfeasance.
PeterWhittaker 1 hour ago|||
I may be wrong, but on a correctly-configured system, one would have to have root access to act nefariously. Since this is intended to prevent exploitation of vulnerabilities that enable privilege escalation, it feels like a net win.
ObscureScience 3 hours ago|||
I guess it could disable the killswitch
cyanydeez 2 hours ago||
besides that.
tosti 2 hours ago||
Better tooling for kpatch would be nice tho
IIRC canonical makes patches for official ubuntu kernels but acts like a Chinese restaurant (closed kitchen, orders come in through a small hatch behind the counter)
frumiousirc 3 hours ago|
If I'm a malicious actor that gets root, can I killswitch the killswitch?
htmlenjoyye 3 hours ago||
you're on the other side of the secure door already
killswitch is to prevent you from gaining root
cowthulhu 2 hours ago||
Once you’ve got root, you don’t need to exploit compromised code to do whatever you want.