I’ve been running my home lab since 2021 and honestly thought my update routine was solid: apt update && apt upgrade, reboot, job done.
Turns out I was wrong. I was checking CVE‑2026‑31431 (Copy Fail) this morning and realised that despite my “successful” updates, I was still running a vulnerable kernel from March.
I’ve had to rethink how I handle host updates. If you’re relying on a standard upgrade and a reboot to keep Proxmox or Debian hosts safe, you might want to check if yours is lying to you as well.
The standard upgrade command has this behavior though, which is unexpected to people like me and the author. You need a specific flag to tell apt to actually upgrade everything which is not the behavior I expected.
But it is clearly stated in the output that it holds back packages.
Lol.
Let’s not defend this behavior by apt.
I’ll die on many “linux is fine for just about everyone” hills.
Getting apt to actually really honestly - I mean it this time - update everything - isn’t for everyone.
Some of us just wait for our hardware to break down, and then reinstall the OS, fresh, instead.