#linux

Behind every click, there’s a risk waiting to be tested. A simple ad, email, or link can now hide something dangerous. Hackers are getting smarter, using new tools to sneak past filters and turn trusted systems against us. But security teams are fighting back. They’re building faster defenses, better ways to spot attacks, and stronger systems to keep people safe. It’s a constant race — every

Microsoft on Tuesday released patches for 63 new security vulnerabilities identified in its software, including one that has come under active exploitation in the wild. Of the 63 flaws, four are rated Critical and 59 are rated Important in severity. Twenty-nine of these vulnerabilities are related to privilege escalation, followed by 16 remote code execution, 11 information disclosure, three

Are you excited to try out post-quantum cryptography in Red Hat Enterprise Linux (RHEL), but you haven't yet upgraded to RHEL 10? Our efforts to ensure that you're ready to make the switch, and to prepare your organization for "Q-Day", now start with RHEL 9.7. By getting started now, you can proactively begin strengthening your security posture and preparing for a seamless transition to RHEL 10.RHEL 9 was released in 2022 and was an important step forward from a security perspective. It was the first version of RHEL that received FIPS 140-3 certification, matching current security requirement

The age of quantum computing is on the horizon, and with its immense processing power comes a significant threat to the cryptographic foundations of our digital world. In this article, we'll explore the emerging support for post-quantum cryptography (PQC) in Red Hat OpenShift 4.20, focusing on how it enhances the core components of the Kubernetes control plane: the apiserver, kubelet, scheduler, and controller-manager. Missing is etcd, using an older version of Go.The quantum threatToday's widely used public-key cryptosystems, such as RSA and elliptic curve cryptography (ECC), form the foundat

Unit 42 discovered LANDFALL, commercial-grade Android spyware, which used a hidden image vulnerability (CVE-2025-21042) to remotely spy on Samsung Galaxy users via WhatsApp. Update your phone now.

Cyber threats didn’t slow down last week—and attackers are getting smarter. We’re seeing malware hidden in virtual machines, side-channel leaks exposing AI chats, and spyware quietly targeting Android devices in the wild. But that’s just the surface. From sleeper logic bombs to a fresh alliance between major threat groups, this week’s roundup highlights a clear shift: cybercrime is evolving fast

### Overview This report **demonstrates a real-world privilege escalation** vulnerability in [pdfminer.six](https://github.com/pdfminer/pdfminer.six) due to unsafe usage of Python's `pickle` module for CMap file loading. It shows how a low-privileged user can gain root access (or escalate to any service account) by exploiting insecure deserialization in a typical multi-user or server environment. ## Table of Contents - [Background](#-background) - [Vulnerability Description](#-vulnerability-description) - [Demo Scenario](#-demo-scenario) - [Technical Details](#-technical-details) - [Setup and Usage](#-setup-and-usage) - [Step-by-step Walkthrough](#-step-by-step-walkthrough) - [Security Standards & References](#-security-standards--references) --- ## Background **pdfminer.six** is a popular Python library for extracting text and information from PDF files. It supports CJK (Chinese, Japanese, Korean) fonts via external CMap files, which it loads from disk using Python's `pickle` m...

### Summary pdfminer.six will execute arbitrary code from a malicious pickle file if provided with a malicious PDF file. The `CMapDB._load_data()` function in pdfminer.six uses `pickle.loads()` to deserialize pickle files. These pickle files are supposed to be part of the pdfminer.six distribution stored in the `cmap/` directory, but a malicious PDF can specify an alternative directory and filename as long as the filename ends in `.pickle.gz`. A malicious, zipped pickle file can then contain code which will automatically execute when the PDF is processed. ### Details ```python # Vulnerable code in pdfminer/cmapdb.py:233-246 def _load_data(cls, name: str) -> Any: name = name.replace("\0", "") # Insufficient sanitization filename = "%s.pickle.gz" % name # ... path construction ... path = os.path.join(directory, filename) # If filename is an absolte path, directory is ignored # ... return type(str(name), (), pickle.loads(gzfile.read())) # Unsafe deserializatio...

A now-patched security flaw in Samsung Galaxy Android devices was exploited as a zero-day to deliver a "commercial-grade" Android spyware dubbed LANDFALL in targeted attacks in the Middle East. The activity involved the exploitation of CVE-2025-21042 (CVSS score: 8.8), an out-of-bounds write flaw in the "libimagecodec.quram.so" component that could allow remote attackers to execute arbitrary