Linux is an open-source operating system used across servers and devices, so kernel, distribution, and software vulnerabilities can affect deployed systems.
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Background for this topic.
Linux is an open-source operating-system kernel: privileged software that manages hardware, memory, processes, filesystems, and networking. Most deployments use it through a distribution that adds user-space tools, package managers, libraries, and an update policy. This distinction matters in security reporting: a kernel flaw, a distribution-package flaw, and a flaw in an application running on Linux may have different affected versions and fixes.
Material attack surfaces include kernel code, loadable modules and device drivers, network services, local privilege boundaries, and third-party packages. Vulnerabilities can enable denial of service, information disclosure, or escalation from an unprivileged account to root, depending on configuration and exploitability. Administrators should track upstream and distribution advisories, apply security updates, and reboot when a running kernel remains vulnerable. Mandatory access-control systems such as SELinux or AppArmor can restrict compromised processes; signed repositories, audit logs, and tested configuration baselines support package integrity and investigation. Open source does not itself guarantee security: exposure depends on code, configuration, maintenance, and the surrounding software stack.
Two information disclosure flaws have been identified in apport and systemd-coredump, the core dump handlers in Ubuntu, Red Hat Enterprise Linux, and Fedora, according to the Qualys Threat Research Unit (TRU)
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.
Vulnerability Researchers: Start Tracking LLM Capabilities, Says Veteran Bug HunterLarge language models have taken a big step forward in their ability to help chase down code flaws, said a vulnerability researcher who successfully trained OpenAI's o3 to review Linux kernel code, leading to the LLM - in an apparent first - discovering a new zero-day vulnerability in the code.
While the botnet may not be completely automated, it uses certain tactics when targeting devices that indicate that it may, at the very least, be semiautomated.
Stealthy Malware Installs Cryptomining SoftwareA botnet targeting Internet of Things devices works by brute forcing credentials and downloading cryptomining software. Researchers call the botnet "PumaBot," since its malware checks for the string "Pumatronix," the name of a Brazilian manufacturer of surveillance and traffic camera systems.
A newly discovered Go-based Linux botnet malware named PumaBot is brute-forcing SSH credentials on embedded IoT devices to deploy malicious payloads. [...]
Embedded Linux-based Internet of Things (IoT) devices have become the target of a new botnet dubbed PumaBot