Turns out I have been updating wrong all this time! 🤦🏼

4 months ago by TheIPW to c/linux

How a “kept back” Proxmox kernel left my home lab exposed to CVE‑2026‑31431 — why I now check upgradable packages and use apt full‑upgrade.

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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BrightCandle 36 points 4 months ago

apt dist-upgrade is a necessary change to your process in place of just upgrade.

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mcheva 2 points 4 months ago

I may be wrong but I think it's apt-get dist-upgrade. apt full-upgrade does the same too.

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ATS1312 13 points 4 months ago

apt-get is now deprecated on Debian and Ubuntu. But otherwise, no notes.

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redditmademedoit 2 points 4 months ago

So "apt-dist-upgrade" then? Sorry if obtuse.

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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linux

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From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

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Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

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