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Home > Linux > A new security update for the Ubuntu kernel is released

A new security update for the Ubuntu kernel is released

The new update fixes the vulnerability found on the Ubuntu distributions and Canonical urges for immediate update.


Rusen Gobel Rusen Gobel
January 20, 2022
1 min read
A new security update for the Ubuntu kernel is released

William Luil and Jamila Hill-Daniel have found a new security flaw on one of the most important Linux distributions, Ubuntu. The new vulnerability is tracked as CVE-2022-0185 and it lets attackers crash the system as well as run software in administrator mode.

All supported Ubuntu versions are affected

The vulnerability affects all of the Ubuntu releases that are still being supported like Ubuntu 21.10 Impish Indri with Linux kernel 5.13, Ubuntu 21.04 Hirsute Hippo with Linux kernel 5.11, Ubuntu 20.04 LTS Focal Fossa, and Ubuntu 18.04 LTS Bionic Beaver, both comes with Linux kernel 5.4 LTS. Users with different a flavor or a kernel also should be checking the repositories since the patch covers them all.

The patch is landed to « Software Updater » utility for Ubuntu Desktop edition. To update other Ubuntu flavors like Ubuntu Server or Ubuntu Studio, you can simply run the command in Terminal:

sudo apt update && sudo apt full-upgrade

For those who can’t apply the updates immediately, there is also a mitigation option to temporarily fix the issue. Disabling unprivileged user namespaces seems to do the trick, as Canonical shared in its official CVE-2022-0185 page. So users can simply use the command below to mitigate the security flaw:

sysctl -w kernel.unprivileged_userns_clone=0

See more Linux News


Tags: Ubuntu
Rusen Gobel

Rusen Gobel

Rusen Gobel is a news editor at Cloud7 News. With more than 10 years of experience, Rusen worked as a hardware and software news editor for technology sites such as Shiftdelete, Teknokolis, Hardware Plus, BT Haber. In addition, Rusen publishes consumer product reviews on his YouTube channel. While consumer electronics has been his main focus for years, now Rusen is more interested in WordPress and software development. He had contributed different web application projects in his professional career. Rusen had graduated from Istanbul University, department of Computer Engineering. Rusen has a very high passion for learning and writing for every kind of technology. That's why he has been working as a tech editor for more than ten years on several different technology magazines and online news portals.

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