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[$] Protecting against TPM interposer attacks

2026-04-06 22:08:13

The Trusted Platform Module (TPM) is a widely misunderstood piece of hardware (or firmware) that lives in most x86-based computers. At SCALE 23x in Pasadena, California, James Bottomley gave a presentation on the TPM and the work that he and others have done to enable the Linux kernel to work with it. In particular, he described the problems with interposer attacks, which target the communication between the TPM and the kernel, and what has been added to the kernel to thwart them.

6.6.133 stable kernel released

2026-04-06 21:57:37

Greg Kroah-Hartman has released the 6.6.133 stable kernel. This reverts a backporting mistake that removed file descriptor checks which led to kernel panics if the fgetxattr, flistxattr, fremovexattr, or fsetxattr functions were called from user space with a file descriptor that did not reference an open file.

Security updates for Monday

2026-04-06 21:16:06

Security updates have been issued by AlmaLinux (freerdp, grafana, grafana-pcp, gstreamer1-plugins-bad-free, gstreamer1-plugins-base, gstreamer1-plugins-good, and gstreamer1-plugins-ugly-free, kernel, libpng12, libpng15, perl-YAML-Syck, python3, and rsync), Debian (dovecot, libxml-parser-perl, pyasn1, python-tornado, roundcube, tor, trafficserver, and valkey), Fedora (bind9-next, chromium, cmake, domoticz, freerdp, giflib, gst-devtools, gst-editing-services, gstreamer1, gstreamer1-doc, gstreamer1-plugin-libav, gstreamer1-plugins-bad-free, gstreamer1-plugins-base, gstreamer1-plugins-good, gstreamer1-plugins-ugly-free, gstreamer1-rtsp-server, gstreamer1-vaapi, libgsasl, libinput, libopenmpt, mapserver, mingw-binutils, mingw-gstreamer1, mingw-gstreamer1-plugins-bad-free, mingw-gstreamer1-plugins-base, mingw-gstreamer1-plugins-good, mingw-libpng, mingw-python3, nginx-mod-modsecurity, openbao, python-gstreamer1, python3.12, python3.13, python3.14, python3.9, rust, rust-sccache, tcpflow, and vim), Red Hat (ncurses), Slackware (infozip and krita), SUSE (chromium, corosync, keybase-client, libinput-devel, osslsigncode, python-pillow, python311-Flask-Cors, python313, and python314), and Ubuntu (libarchive and spip).

Kernel prepatch 7.0-rc7

2026-04-06 09:01:46

Linus has released 7.0-rc7 for testing. "Things look set for a final release next weekend, but please keep testing. The Easter bunny is watching".

Hackers breached the European Commission (The Next Web)

2026-04-05 21:55:57

LWN recently reported on the Trivy compromise that led, in turn, to the compromise of the LiteLLM system; that article made the point that the extent of the problem was likely rather larger than was known. The Next Web now reports that the Trivy attack was used to compromise a wide range of European Commission systems.

The European Union's computer emergency response team said on Thursday that a supply chain attack on an open-source security scanner gave hackers the keys to the European Commission's cloud infrastructure, resulting in the theft and public leak of approximately 92 gigabytes of compressed data including the personal information and email contents of staff across dozens of EU institutions.

[$] Ubuntu's GRUBby plans

2026-04-03 23:12:34

GNU GRUB 2, mostly just referred to as GRUB these days, is the most widely used boot loader for x86_64 Linux systems. It supports reading from a vast selection of filesystems, handles booting modern systems with UEFI or legacy systems with a BIOS, and even allows users to customize the "splash" image displayed when a system boots. Alas, all of those features come with a price; GRUB has had a parade of security vulnerabilities over the years. To mitigate some of those problems, Ubuntu core developer and Canonical employee Julian Andres Klode has proposed removing a number of features from GRUB in Ubuntu 26.10 to improve GRUB's security profile. His proposal has not been met with universal acclaim; many of the features Klode would like to remove have vocal proponents.