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submitted 20 hours ago by TheIPW@lemmy.ml to c/linux@lemmy.ml

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.

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[-] paris@lemmy.blahaj.zone 14 points 9 hours ago

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.

[-] ShortN0te@lemmy.ml 1 points 4 hours ago

But it is clearly stated in the output that it holds back packages.

this post was submitted on 01 May 2026
113 points (96.7% liked)

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