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Four stable kernels for the weekend

2026-01-18 03:27:19

Greg Kroah-Hartman has released the 6.18.6, 6.12.66, 6.6.121, and 6.1.161 stable kernels. As usual, each has important fixes throughout the tree; users are advised to upgrade.

[$] A free and open-source rootkit for Linux

2026-01-17 01:57:32

While there are several rootkits that target Linux, they have so far not fully embraced the open-source ethos typical of Linux software. Luckily, Matheus Alves has been working to remedy this lack by creating an open-source rootkit called Singularity for Linux systems. Users who feel their computers are too secure can install the Singularity kernel module in order to allow remote code execution, disable security features, and hide files and processes from normal administrative tools. Despite its many features, Singularity is not currently known to be in use in the wild — instead, it provides security researchers with a testbed to investigate new detection and evasion techniques.

Security updates for Friday

2026-01-16 22:14:02

Security updates have been issued by AlmaLinux (gnupg2), Debian (firefox-esr), Oracle (cups, gnupg2, libpq, net-snmp, postgresql, postgresql:15, postgresql:16, transfig, and vsftpd), Red Hat (firefox), SUSE (apache2, curl, firefox, gpg2, hawk2, libcryptopp-devel, openCryptoki, python310, python311-urllib3, rke2, squid, and tomcat), and Ubuntu (cpp-httplib, git, python-apt, and simgear).

A 0-click exploit chain for the Pixel 9 (Project Zero)

2026-01-16 08:04:38

The Project Zero blog has a three-part series describing a working, zero-click exploit for Pixel 9 devices.

Over the past few years, several AI-powered features have been added to mobile phones that allow users to better search and understand their messages. One effect of this change is increased 0-click attack surface, as efficient analysis often requires message media to be decoded before the message is opened by the user. One such feature is audio transcription. Incoming SMS and RCS audio attachments received by Google Messages are now automatically decoded with no user interaction. As a result, audio decoders are now in the 0-click attack surface of most Android phones.

The blog entry does not question the wisdom of directly exposing audio decoders to external attackers, but it does provide a lot of detail showing how it can go wrong. The first part looks at compromising the codec; part two extends the exploit to the kernel, and part three looks at the implications:

It is alarming that it took 139 days for a vulnerability exploitable in a 0-click context to get patched on any Android device, and it took Pixel 54 days longer. The vulnerability was public for 82 days before it was patched by Pixel.

Running Debian on the OpenWrt One (Collabora Blog)

2026-01-16 02:57:56

Sjoerd Simons has published a blog post about running Debian on the OpenWrt One router hardware:

With openwrt-one-debian, you can now install and run a full Debian system leveraging the OpenWrt One's NVMe storage, enabling everything from custom services and containers to development tools and lightweight server workloads, all on open hardware.

This project provides a rust-based flasher to install Debian on the OpenWrt One, opening the door to standard Debian tooling, packages, and workflows. For developers and power users, it transforms the OpenWrt One from a network appliance into a compact, general-purpose Linux system.

See the GitHub repository for the code and latest build. LWN reviewed the device in November 2024, and covered Denver Gingerich's talk at SCALE 22x about the making of the router in March 2025.

Forgejo 14.0 released

2026-01-15 23:04:40

Version 14.0 of the Forgejo software forge has been released. Notable changes in this release include several database improvements, new options for approving actions execution from pull requests, a new file editor, and progress toward making Forgejo's web UI work without JavaScript.