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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).

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.

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Timing Flaw in systemd Cleanup Enables Root Privilege Escalation (cybersecurity88.com)

submitted 7 hours ago by ChrisG@lemmy.world to c/linux@lemmy.ml

20 comments fedilink hide all child comments

Yet another critical vulnerability in systemd, this time involving snapd. Ubuntu folk are affected.

"A serious security issue has been discovered in Ubuntu, and it is gaining attention in the cybersecurity community. The vulnerability is identified as CVE-2026-3888 and mainly affects Ubuntu Desktop systems from version 24.04 onwards. This flaw is dangerous because it allows an attacker with limited access to gain full root privileges. Root access means complete control over the entire system."

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[–] bad1080@piefed.social 2 points 5 hours ago* (last edited 4 hours ago) (1 children)

how would i know if Kubuntu 25.10 is affected (based on ubuntu)?
i guess this means yes?
command 'snap' from deb snapd (2.73+ubuntu25.10.1)
as it is lower than the version mentioned in the article "Upstream snapd: versions prior to 2.75"

now the question is how do i force an update on that thing?
sudo apt upgrade did not include an update for snapd:

Upgrading:
bpftool linux-headers-generic linux-libc-dev linux-tools-common
linux-generic linux-image-generic linux-perf

Installing dependencies:
linux-headers-6.17.0-20 linux-image-6.17.0-20-generic linux-tools-6.17.0-20
linux-headers-6.17.0-20-generic linux-modules-6.17.0-20-generic linux-tools-6.17.0-20-generic

Suggested packages:
linux-tools

Not upgrading yet due to phasing:
fwupd libfwupd3

Summary:
Upgrading: 7, Installing: 6, Removing: 0, Not Upgrading: 2
Download size: 212 MB
Space needed: 421 MB / 417 GB available

edit:
i tried sudo apt install snapd but it returned:

snapd is already the newest version (2.73+ubuntu25.10.1).
snapd set to manually installed.

edit2:
or am i save because of this?:

Ubuntu 25.10 LTS: snapd versions prior to 2.73+ubuntu25.10.1

[–] ChrisG@lemmy.world -1 points 3 hours ago

Switch to Devuan and have a peaceful life I guess.

Cheers!