Dirty Frag: Linux kernel hit by second major security flaw in two weeks
The issue was found in the same area of the Linux kernel that produced last month’s Copy Fail bug, and also allows anyone with a basic account on an affected...
Linux
20 articles
New ‘Dirty Frag’ Linux Vulnerability Possibly Exploited in Attacks
Also called Copy Fail 2 and tracked as CVE-2026-43284 and CVE-2026-43500, the exploit was disclosed before a patch was released. The post New ‘Dirty Frag’ Li...
Security Affairs newsletter Round 576 by Pierluigi Paganini – INTERNATIONAL EDITION
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box.
Quasar Linux RAT (QLNX): A Fileless Linux Implant Built for Stealth and Persistence
Researchers uncovered QLNX, a Linux RAT targeting developers to steal credentials, log keystrokes, monitor systems, and enable remote access. Security resear...
Dirty Frag: Using the Page Caches as an Attack Surface
Dirty Frag is a Linux local privilege escalation (LPE) chain published on May 7, 2026. It combines two previously unknown kernel vulnerabilities can allow an...
Copy Fail and DirtyFrag: Linux Page Cache Bugs in the Wild
This research analyzes the Linux kernel privilege escalation vulnerabilities Copy Fail and DirtyFrag, which exploit subtle page cache corruption bugs to crea...
'Dirty Frag' Linux zero-day exposes most distributions to LPE
Dirty Frag Linux zero-day exposes most distributions to root privilege escalation.
Dirty Frag (CVE-2026-43284, CVE-2026-43500): Frequently asked questions about this Linux kernel privilege escalation vulnerability chain
Weeks after the Copy Fail vulnerability was revealed, a new Linux kernel escalation vulnerability has been uncovered. Dubbed “Dirty Frag,” this flaw could al...
New Quasar Linux implant targets developers with rootkit and backdoor capabilities
QLNX is designed for stealth and long-term persistence, operating in-memory and employing multiple techniques to evade detection, including log wiping, proce...
Pam Backdoor Targets Linux Systems to Steal SSH Credentials
A newly observed Linux backdoor technique, dubbed Pam, is exploiting the flexibility of Pluggable Authentication Modules (PAM) to capture SSH credentials and...
Quasar Linux RAT Steals Developer Credentials for Software Supply Chain Compromise
A previously undocumented Linux implant codenamed Quasar Linux RAT (QLNX) is targeting developers' systems to establish a silent foothold as well as facilita...
New Linux PamDOORa Backdoor Uses PAM Modules to Steal SSH Credentials
Cybersecurity researchers have disclosed details of a new Linux backdoor named PamDOORa that's being advertised on the Rehub Russian cybercrime forum for $1,...
Another Universal Linux Local Privilege Escalation (LPE) Vulnerability: Dirty Frag, (Fri, May 8th)
Less than two weeks after the public disclosure of the Copy Fail vulnerability (CVE-2026-31431), another local privilege escalation (LPE) vulnerability in th...
New Linux 'Dirty Frag' zero-day gives root on all major distros
A new Linux zero-day vulnerability, named Dirty Frag, allows local attackers to gain root privileges on most major Linux distributions with a single command. [.
PoC Exploit Released for Dirty Frag Linux Kernel Vulnerability
A proof-of-concept exploit for a new Linux kernel vulnerability class dubbed “Dirty Frag”. This universal local privilege escalation vulnerability allows att...
Linux Kernel Dirty Frag LPE Exploit Enables Root Access Across Major Distributions
Details have emerged about a new, unpatched local privilege escalation (LPE) vulnerability impacting the Linux kernel. Dubbed Dirty Frag, it has been describ...
Smashing Security podcast #466: Meta sees everything, Copy Fail, and a deepfake gets hired
Meta's smart glasses promise privacy "designed for you" - but everything they record was being beamed off to workers in Nairobi to label by hand. When those ...
Sophisticated Quasar Linux RAT Targets Software Developers
The persistent, evasive implant provides remote access, surveillance, and credential exfiltration capabilities. The post Sophisticated Quasar Linux RAT Targe...
Copy Fail: What You Need to Know About the Most Severe Linux Threat in Years
Copy Fail (CVE-2026-31431) is a critical Linux kernel LPE that allows stealthy root access. This flaw impacts millions of systems.
New stealthy Quasar Linux malware targets software developers
A previously undocumented Linux implant named Quasar Linux (QLNX) is targeting developers' systems with a mix of rootkit, backdoor, and credential-stealing c...