Linux Kernel
CISA: High-severity Linux flaw now exploited by ransomware gangs
CISA confirmed on Thursday that a high-severity privilege escalation flaw in the Linux kernel is now being exploited in ransomware attacks. While the vulnerability (tracked as CVE-2024-1086) was disclosed on January 31, 2024, as a use-after-free weakness in the netfilter: nf_tables kernel component and was fixed via a commit submitted in January 2024, it was first introduced […]
Google fixes actively exploited Android flaws in September update
Google has released the September 2025 security update for Android devices, addressing a total of 84 vulnerabilities, including two actively exploited flaws. The two flaws that were detected as exploited in zero-day attacks are CVE-2025-38352, an elevation of privilege in the Android kernel, and CVE-2025-48543, also an elevation of privilege problem in the Android Runtime component. Google noted […]
New Tor Oniux tool anonymizes any Linux app’s network traffic
Tor has announced Oniux, a new command-line tool for routing any Linux application securely through the Tor network for anonymized network connections. Unlike classic methods like torsocks, which rely on user-space tricks, Oniux uses Linux namespaces to create a fully isolated network environment for each application, preventing data leaks even if the app is malicious […]
CISA orders agencies to patch Linux kernel bug exploited in attacks
CISA has ordered federal agencies to secure their systems within three weeks against a high-severity Linux kernel flaw actively exploited in attacks. Tracked as CVE-2024-53104, the security bug was first introduced in kernel version 2.6.26 and was patched by Google for Android users on Monday. “There are indications that CVE-2024-53104 may be under limited, targeted exploitation,” the Android February 2025 […]
New stealthy Pumakit Linux rootkit malware spotted in the wild
A new Linux rootkit malware called Pumakit has been discovered that uses stealth and advanced privilege escalation techniques to hide its presence on systems. The malware is a multi-component set that includes a dropper, memory-resident executables, a kernel module rootkit, and a shared object (SO) userland rootkit. Elastic Security discovered Pumakit in a suspicious binary (‘cron’) upload […]
Linux kernel impacted by new SLUBStick cross-cache attack
A novel Linux Kernel cross-cache attack named SLUBStick has a 99% success in converting a limited heap vulnerability into an arbitrary memory read-and-write capability, letting the researchers elevate privileges or escape containers. The discovery comes from a team of researchers from the Graz University of Technology who demonstrated the attack on Linux kernel versions 5.9 and 6.2 (latest) using […]