A single character could be enough to let hackers crack your Linux kernel

Date:
Tue, 09 Jun 2026 19:35:00 +0000

Description:
A logic inversion bug was recently found in Linux, caused by a single stray character.

FULL STORY ======================================================================Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Logicinversion bug in Linux kernel (CVE202623111) enabled local privilege escalation Affected major distros including Debian, Ubuntu, and RHEL; fixes rolling out unevenly Discovery adds to surge of recent Linux LPEs as maintainers struggle with AIdriven bugreport overload A single stray character sitting in the Linux kernel created a logic inversion bug that enabled privilege escalation, leading to a (theoretical) full device takeover.

The bug was discovered in early 2025 by security researcher Oliver Sieber
from Exodus Intelligence, who later demonstrated a full working local root exploit, and is now tracked as CVE-2026-23111 and given a severity score of 7.8/10 (high). According to TheHackerNews , the vulnerability is tied to the upstream Linux kernel, meaning it can affect many distributions that shipped
a vulnerable kernel build. Specifically, Debian (Bookworm and Trixie, and in some instances Bullseye), Ubuntu (22.04 LTS, 24.04 LTS, and 25.10), and Red Hat Enterprise Linux 10 (RHEL 10) were confirmed to have been affected - with SUSE and Amazon Linux also being tracked or affected in general. Latest
Videos From Watch full video here: Multiple kernel flaws discovered The
caveat here is that a system is only exposed if it has a vulnerable kernel version (before the fix), nf_tables enabled, and unprivileged user namespaces enabled.

In the weeks and months following the disclosure, some distro maintainers
came forward with a fix. Ubuntu, for example, now has fixes for 22.04, 24.04, and 25.10, while Debian fixed Bookworm and Trixie. There is also a 6.1 backport for Bullseye LTS. Red Hat, SUSE, and Amazon Linux dont seem to have fixed it yet. You may like Another major Linux security flaw revealed nine-year old issue could spell disaster for users "Copy Fail" flaw impacts all Linux kernels released since 2017 Another major Linux security issue uncovered - new Fragnesia flaw allows attackers to run malicious code as root

Its been an eventful few weeks for the Linux kernel, as researchers
discovered multiple local-root vulnerabilities. Copy Fail, Dirty Frag, Fragnesia, DirtyDecrypt, are just some of the major vulnerabilities that were discovered and fixed in recent times.

At the same time, the Linux allfather Linux Torvalds said the projects security mailing list has become almost entirely unmanageable due to researchers using AI to find bugs, filing duplicate reports, essentially DDoS-ing those working to actually address them. Are you a pro? Subscribe to our newsletter Sign up to the TechRadar Pro newsletter to get all the top news, opinion, features and guidance your business needs to succeed! Contact me with news and offers from other Future brands Receive email from us on behalf of our trusted partners or sponsors By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over. The best antivirus for all budgets Our top picks, based on real-world testing and comparisons

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