LINUX

Pierluigi Paganini May 09, 2026
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 researchers discovered a previously undocumented Linux malware called Quasar Linux RAT (QLNX) that targets developers and DevOps environments. The malicious code can steal credentials, log keystrokes, manipulate files, monitor clipboard activity, and create network tunnels […]

Pierluigi Paganini May 08, 2026
Dirty Frag: A new Linux privilege escalation vulnerability is already in the wild

Dirty Frag: unpatched Linux kernel flaw grants root access on Ubuntu, RHEL and Fedora. A working exploit is already public. Security researchers have disclosed a new unpatched vulnerability in the Linux kernel, code-named Dirty Frag, that allows an unprivileged local user to gain full root access on most major Linux distributions, including Ubuntu, RHEL, Fedora, […]

Pierluigi Paganini May 04, 2026
U.S. CISA adds a flaw in Linux Kernel to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in Linux Kernel to its Known Exploited Vulnerabilities catalog The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a flaw in the Linux Kernel, tracked as CVE-2026-31431 (CVSS score of 7.8), to its Known Exploited Vulnerabilities (KEV) catalog. Recently, Xint Code researchers warned of a serious Linux […]

Pierluigi Paganini April 30, 2026
Copy Fail: New Linux bug enables Root via page‑cache corruption

Linux flaw CVE‑2026‑31431, ‘Copy Fail,’ lets any local user write four bytes into page cache files, enabling easy escalation to root on major distros. Xint Code researchers warn of a serious Linux flaw, tracked as CVE-2026-31431 (CVSS score of 7.8), dubbed Copy Fail. It lets any local, unprivileged user write four controlled bytes into the […]

Pierluigi Paganini April 24, 2026
12-year-old Pack2TheRoot bug lets Linux users gain root privileges

‘Pack2TheRoot’ flaw lets local Linux users gain root via PackageKit. CVE-2026-41651 (8.8) has existed for nearly 12 years. The Pack2TheRoot flaw, tracked as CVE-2026-41651, lets unprivileged users install or remove system packages without authorization, potentially gaining full root access. The vulnerability is rated high severity, CVSS score of 8.8, and has existed for nearly 12 […]

Pierluigi Paganini April 23, 2026
Microsoft Graph API misused by new GoGra Linux malware for hidden communication

A new GoGra Linux malware uses Microsoft Graph API and an Outlook inbox to deliver payloads, making it stealthy and hard to detect. A new Linux version of the GoGra backdoor uses Microsoft’s Graph API and an Outlook inbox to deliver malicious payloads stealthily. The malware is linked to the Harvester cyberespionage group, which is […]

Pierluigi Paganini March 16, 2026
Unprivileged users could exploit AppArmor bugs to gain root access

Researchers found nine “CrackArmor” flaws in Linux AppArmor that could let unprivileged users bypass protections, gain root privileges, and weaken container isolation. Qualys researchers disclosed nine vulnerabilities, collectively tracked as CrackArmor, in the Linux kernel’s AppArmor module. The flaws have existed since 2017 and could allow unprivileged users to bypass protections, escalate privileges to root, […]

Pierluigi Paganini February 08, 2026
DKnife toolkit abuses routers to spy and deliver malware since 2019

DKnife is a Linux toolkit used since 2019 to hijack router traffic and deliver malware in cyber-espionage attacks. Cisco Talos found DKnife, a powerful Linux toolkit that threat actors use to spy on and control network traffic through routers and edge devices. It inspects and alters data in transit and installs malware on PCs, phones, […]

Pierluigi Paganini January 24, 2026
11-Year-Old critical telnetd flaw found in GNU InetUtils (CVE-2026-24061)

Critical telnetd flaw CVE-2026-24061 (CVSS 9.8) affects all GNU InetUtils versions 1.9.3–2.7 and went unnoticed for nearly 11 years. A critical vulnerability, tracked as CVE-2026-24061 (CVSS score of 9.8), in the GNU InetUtils telnet daemon (telnetd) impacts all versions from 1.9.3 to 2.7. The vulnerability can be exploited to gain root access on affected systems. […]

Pierluigi Paganini January 21, 2026
VoidLink shows how one developer used AI to build a powerful Linux malware

VoidLink is a cloud-focused Linux malware, likely built by one person using AI, offering loaders, implants, rootkit evasion, and modular plugins. Check Point researchers uncovered VoidLink, a cloud-focused Linux malware framework likely built by a single developer with help from an AI model. VoidLink includes custom loaders, implants, rootkit-based evasion features, and dozens of plugins […]