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LWN.net

[$] Protecting against TPM interposer attacks

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.

LWN.net

6.6.133 stable kernel released

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.

LWN.net

Security updates for Monday

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