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.
Weekly headline count for the current query.
Hackers are exploiting a recently disclosed critical vulnerability (CVE-2026-48558) in SimpleHelp to deploy Djinn Stealer, a previously undocumented cross-platform information stealer targeting Windows, macOS, and Linux. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added a recently disclosed security flaw impacting various Linux distributions to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild
Hackers are targeting developers by exploiting the critical vulnerability CVE-2025-11953 in the Metro server for React Native to deliver malicious payloads for Windows and Linux. [...]
Hackers are targeting developers by exploiting the critical vulnerability CVE-2025-11953 in the Metro server for React Native to deliver malicious payloads for Windows and Linux. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has updated its Known Exploited Vulnerabilities (KEV) catalog to include a security flaw impacting OpenPLC ScadaBR, citing evidence of active exploitation
Threat actors exploited a recently patched remote code execution vulnerability (CVE-2025-20352) in older, unprotected Cisco networking devices to deploy a Linux rootkit and gain persistent access. [...]
Hackers are actively exploiting a critical vulnerability (CVE-2025-32463) in the sudo package that enables the execution of commands with root-level privileges on Linux operating systems. [...]
Hackers were spotted exploiting a critical SAP NetWeaver vulnerability tracked as CVE-2025-31324 to deploy the Auto-Color Linux malware in a cyberattack on a U.S.-based chemicals company. [...]
Backdoor malware Auto-Color targets Linux systems, exploiting SAP NetWeaver flaw CVE-2025-31324
Muhstik botnet exploits a critical Apache RocketMQ flaw (CVE-2023-33246) for remote code execution, targeting Linux servers and IoT devices for DDoS attacks and cryptocurrency mining
The attacks exploit CVE-2023-22518, a critical flaw in Atlassian Confluence Data Center and Server
CVE-2024-1086 turns the page tables on system admins A Linux privilege-escalation proof-of-concept exploit has been published that, according to the bug hunter who developed it, typically works effortlessly on kernel versions between at least 5.14 and 6.6.14. …
Identified as CVE-2023-46604, the vulnerability has a CVSS score of 9.8
The Kinsing malware operator is actively exploiting the CVE-2023-46604 critical vulnerability in the Apache ActiveMQ open-source message broker to compromise Linux systems. [...]
We uncovered the active exploitation of the Apache ActiveMQ vulnerability CVE-2023-46604 to download and infect Linux systems with the Kinsing malware (also known as h2miner) and cryptocurrency miner.
The operators of the Kinsing malware are targeting cloud environments with systems vulnerable to "Looney Tunables," a Linux security issue identified as CVE-2023-4911 that allows a local attacker to gain root privileges on the system. [...]
Following the publication of the critical Linux security vulnerability, security specialists released PoC exploits to test the implications of CVE-2023-4911.
We observed the threat actor group known as “8220 Gang” employing new strategies for their respective campaigns, including exploits for the Linux utility “lwp-download” and CVE-2017-3506, an Oracle WebLogic vulnerability.
Users of WSO2 products are advised to update their respective products and platforms or to apply the temporary mitigation steps immediately.
We provide a guide to detecting Dirty Pipe, a Linux kernel vulnerability tracked as CVE-2022-0847.