Mozilla updates GPG signing key for Firefox releases after exposure
Mozilla announced today that it updated the GPG key used to sign Firefox and Thunderbird releases after it was accidentally exposed on GitHub. [...]
Showing only posts tagged Linux. Show all posts.
New RefluXFS Linux flaw lets attackers gain root privileges
A nine-year-old race condition vulnerability in the Linux kernel's XFS filesystem, tracked as CVE-2026-64600, allows local attackers to overwrite protected files and gain root privileges. [...]
OpenMandriva Linux says contributor tried to sabotage the project
The OpenMandriva Linux project announced that it was the target of an attempted act of internal sabotage after a dispute among contributors. [...]
Google pays $250K for Linux vulnerability allowing guest VM escapes
A Linux vulnerability that allows untrusted virtual machines to gain root access to host machines is one of two high-severity flaws to surface this week in the open source operating system. The vulnerability resides in KVM, which is, in essence, a virtual machine app included in the kernel of …
Kali Linux 2026.2 released with 9 new tools, NetHunter updates
Kali Linux 2026.2, the second release of the year, is now available for download, featuring 9 new tools and numerous Kali NetHunter improvements. [...]
High-severity vulnerability in Linux caused by a single faulty character
Researchers have analyzed a high-severity vulnerability in Linux that’s able to escalate untrusted users to root by exploiting a bug you don't often see: a single errant character inside the kernel. The vulnerability, tracked as CVE-2026-23111, is located in nf_tables, a subsystem of the Linux kernel that provides …
New CIFSwitch Linux flaw gives root on multiple distributions
A newly discovered local privilege escalation vulnerability dubbed 'CIFSwitch' in the Linux kernel could allow attackers to forge CIFS authentication key descriptions, abuse the kernel's key request mechanism, and gain root privileges. [...]
Exploit released for new PinTheft Arch Linux root escalation flaw
PinTheft, a recently patched Linux privilege escalation vulnerability, now has a publicly available proof-of-concept (PoC) exploit that allows local attackers to gain root privileges on Arch Linux systems. [...]
Exploit available for new DirtyDecrypt Linux root escalation flaw
A recently patched local privilege escalation vulnerability in the Linux kernel's rxgk module now has a proof-of-concept exploit that allows attackers to gain root access on some Linux systems. [...]
Microsoft Exchange, Windows 11 hacked on second day of Pwn2Own
During the second day of Pwn2Own Berlin 2026, competitors collected $385,750 in cash awards after exploiting 15 unique zero-day vulnerabilities in multiple products, including Windows 11, Microsoft Exchange, and Red Hat Enterprise Linux for Workstations. [...]
Windows 11 and Microsoft Edge hacked at Pwn2Own Berlin 2026
On the first day of Pwn2Own Berlin 2026, security researchers collected $523,000 in cash awards after exploiting 24 unique zero-days. [...]
New critical Exim mailer flaw allows remote code execution
A critical vulnerability affecting certain configurations of the Exim open-source mail transfer agent could be exploited by an unauthenticated remote attacker to execute arbitrary code. [...]
Copy.Fail Linux Vulnerability
This is the worst Linux vulnerability in years. TL;DR copy.fail is a Linux kernel local privilege escalation, not a browser or clipboard attack. Disclosed by Theori on 29 April 2026 with a working PoC. It abuses the kernel crypto API (AF_ALG sockets) plus splice() to write four …
Linux bitten by second severe vulnerability in as many weeks
Linux users have been bitten by yet another vulnerability that gives containers and untrusted users the ability to gain root access, marking the second time in as many weeks that a severe threat has caught defenders off guard. The threat, known as Dirty Frag, allows low-privilege users, including those …
New Linux 'Dirty Frag' zero-day gives root on all major distros
A new Linux zero-day exploit, named Dirty Frag, allows local attackers to gain root privileges on most major Linux distributions with a single command. [...]
CISA says ‘Copy Fail’ flaw now exploited to root Linux systems
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. [...]
The most severe Linux threat to surface in years catches the world flat-footed
Publicly released exploit code for an effectively unpatched vulnerability that gives root access to virtually all releases of Linux is setting off alarm bells as defenders scramble to ward off severe compromises inside data centers and on personal devices. The vulnerability and exploit code that exploits it were released …
New Linux ‘Copy Fail’ flaw gives hackers root on major distros
An exploit has been published for a local privilege escalation vulnerability dubbed "Copy Fail" that impacts Linux kernels released since 2017, allowing an unprivileged local attacker to gain root permissions. [...]
New ‘Pack2TheRoot’ flaw gives hackers root Linux access
A new vulnerability dubbed Pack2TheRoot could be exploited in the PackageKit daemon to allow local Linux users to install or remove system packages and gain root permissions. [...]
New GoGra malware for Linux uses Microsoft Graph API for comms
A Linux variant of the GoGra backdoor uses legitimate Microsoft infrastructure, relying on an Outlook inbox for stealthy payload delivery. [...]
Kali Linux 2026.1 released with 8 new tools, new BackTrack mode
Kali Linux 2026.1, the first release of the year, is now available for download, featuring 8 new tools, a theme refresh, and a new BackTrack mode for Kali-Undercover. [...]
DKnife Linux toolkit hijacks router traffic to spy, deliver malware
A newly discovered toolkit called DKnife has been used since 2019 to hijack traffic at the edge-device level and deliver malware in espionage campaigns. [...]
New VoidLink malware framework targets Linux cloud servers
A newly discovered advanced cloud-native Linux malware framework named VoidLink focuses on cloud environments, providing attackers with custom loaders, implants, rootkits, and plugins designed for modern infrastructures. [...]
Never-before-seen Linux malware is “far more advanced than typical”
Researchers have discovered a never-before-seen framework that infects Linux machines with a wide assortment of modules that are notable for the range of advanced capabilities they provide to attackers. The framework, referred to as VoidLink by its source code, features more than 30 modules that can be used to …
Kali Linux 2025.4 released with 3 new tools, desktop updates
Kali Linux has released version 2025.4, its final update of the year, introducing three new hacking tools, desktop environment improvements, the preview of Wifipumpkin3 in NetHunter, and enhanced Wayland support. [...]
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