Latest cybersecurity reporting from selected sources.

DirtyClone: a Linux kernel privilege escalation that silently rewrites executables in memory, leaving no disk trace. Patch now. JFrog Security Research published a working exploit walkthrough on June 25 for CVE-2026-43503 (CVSS score of 8.8), a Linux kernel privilege escalation they call DirtyClone. It’s the fourth vulnerability in the DirtyFrag family, all sharing the same […]

DirtyClone is a new Linux kernel privilege escalation in the DirtyFrag family. JFrog Security Research published a working exploit walkthrough for the flaw on June 25, the first public demonstration for this variant

Security researchers have published a detailed, working exploit for a Linux kernel use-after-free that lets an unprivileged local user escalate to root and break out of a container

No Patches Yet Available, After Third Party Published Vulnerability DetailsSecurity researchers have discovered a new, critical flaw in the Linux kernel that attackers can exploit to gain root access. No patches are yet available to fix "Dirty Frag," the second new local privilege escalation flaw to be found in two weeks, following the similar "Copy Fail" vulnerability.

Researchers dropped a reliable root exploit and it didn’t sit idle for long

Researchers dropped a reliable root exploit and it didn’t sit idle for long CISA is warning that a newly-disclosed Linux kernel bug dubbed "CopyFail" is already being exploited, just days after researchers dropped a working root-level exploit.…

CISA has warned that threat actors have started exploiting the "Copy Fail" Linux security vulnerability in the wild, one day after Theori researchers disclosed it and shared a proof-of-concept (PoC) exploit. [...]

Cybersecurity researchers have disclosed details of a new botnet operation called SSHStalker that relies on the Internet Relay Chat (IRC) communication protocol for command-and-control (C2) purposes

Race-Condition Bugs in Ubuntu and Red Hat Tools Could Leak Sensitive Memory DataHackers could exploit a tool that stores crashed system data in older Linux operating systems to obtain passwords and encryption keys, warn researchers. The flaw lies in the way certain Linux distributions, including Ubuntu, Red Hat, and Fedora, handle application crashes.

On the first day of Pwn2Own Berlin 2025, security researchers were awarded $260,000 after successfully demonstrating zero-day exploits for Windows 11, Red Hat Linux, Docker Desktop, and Oracle VirtualBox. [...]

Update now: Qualys says flaws give root to local users, are 'easily exploitable' Researchers at Qualys refuse to release exploit code for five bugs in the Linux world's needrestart utility that allow unprivileged local attackers to gain root access without any user interaction.…

Update now: Qualys says vulnerabilities give root and are 'easily exploitable' Researchers at Qualys refuse to release exploit code for five bugs in Ubuntu Server's needrestart utility that allow unprivileged attackers to gain root access without any user interaction.…

Multiple decade-old security vulnerabilities have been disclosed in the needrestart package installed by default in Ubuntu Server (since version 21.04) that could allow a local attacker to gain root privileges without requiring user interaction

Cybersecurity researchers have uncovered a new malware campaign targeting Linux environments to conduct illicit cryptocurrency mining

Cybersecurity researchers have unpacked the inner workings of a new ransomware variant called Cicada3301 that shares similarities with the now-defunct BlackCat (aka ALPHV) operation

Cybersecurity researchers have shed light on a novel Linux kernel exploitation technique dubbed SLUBStick that could be exploited to elevate a limited heap vulnerability to an arbitrary memory read-and-write primitive

Researchers have demonstrated the "first native Spectre v2 exploit" for a new speculative execution side-channel flaw that impacts Linux systems running on many modern Intel processors. [...]

Cybersecurity researchers have disclosed what they say is the "first native Spectre v2 exploit" against the Linux kernel on Intel systems that could be exploited to read sensitive data from the memory

The actor utilizes custom Linux malware to pursue financial gain, according to Check Point Research

Cybersecurity researchers have found that it's possible for threat actors to exploit a well-known utility called command-not-found to recommend their own rogue packages and compromise systems running Ubuntu operating system