Hírolvasó

[$] P4TC hits a brick wall

1 év 3 hónap óta
P4, short for "Programming Protocol-independent Packet Processors", is a programming language aimed at networking devices; it is useful for the configuration of firewalls and complicated routing architectures. Since a lot of advanced networking is done with Linux systems, it stands to reason that there would be value in supporting P4 and, indeed, an implementation of P4 in the kernel's traffic-control subsystem was first posted by Jamal Hadi Salim at the beginning of 2023. After nearly 18 months, though, this feature has not been merged, and the chances of that happening would appear to be getting worse.
corbet

perl v5.40.0 released

1 év 3 hónap óta
Version 5.40.0 of the Perl language has been released. "Perl 5.40.0 represents approximately 11 months of development since Perl 5.38.0 and contains approximately 160,000 lines of changes across 1,500 files from 75 authors". Significant changes include a new __CLASS__ keyword, a :reader attribute for field variables, a new "^^" logical-XOR operator (because two of those were not enough), moving "try/catch" out of the experimental category, and more; see this page for lots of details.
corbet

Security updates for Monday

1 év 3 hónap óta
Security updates have been issued by Fedora (galera and mariadb10.11), Mageia (0-plugins-base and plasma-workspace), Oracle (ruby:3.1 and ruby:3.3), Red Hat (bind, bind-dyndb-ldap, and dhcp), SUSE (apache2, glib2, libvirt, openssl-1_1, openssl-3, opera, python-Jinja2, python-requests, and squid), and Ubuntu (linux, linux-gcp, linux-gcp-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-xilinx-zynqmp, linux, linux-gcp, linux-gcp-6.5, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-raspi, linux, linux-ibm, linux-lowlatency, linux-raspi, linux-aws, linux-gcp, linux-azure, linux-azure-6.5, linux-starfive, linux-starfive-6.5, and linux-gke, linux-ibm, linux-intel-iotg, linux-oracle).
jake

[$] Ladybird browser spreads its wings

1 év 3 hónap óta

Ladybird is an open-source project aimed at building an independent web browser, rather than yet another browser based on Chrome. It is written in C++ and licensed under a two-clause BSD license. The effort began as part of the SerenityOS project, but developer Andreas Kling announced on June 3 that he was "forking" Ladybird as a separate project and stepping away from SerenityOS to focus his attention on the browser completely. Ladybird is not ready to replace Firefox or Chrome for regular use, but it is showing great promise.

jzb

Linux nftables vulnerability exploited in the wild (CrowdStrike)

1 év 3 hónap óta

According to CrowdStrike, a vulnerability in the Linux kernel's nftables code that was discovered earlier this year is being actively exploited in the wild. The vulnerability allows for local privilege escalation. Most distributions have already released a fix.

As noted by the exploit developer, leveraging this POC is dependent on the kernel's unprivileged user namespaces feature accessing nf_tables. This access is enabled by default on Debian, Ubuntu and kernel capture-the-flag (CTF) distributions. An attacker can then trigger the double-free vulnerability, scan the physical memory for the kernel base address, bypass kernel address-space layout randomization (KASLR) and access the modprobe_path kernel variable with read/write privileges. After overwriting the modprobe_path, the exploit drops a root shell.
daroc

[$] Modernizing BPF for the next 10 years

1 év 3 hónap óta

BPF was first generalized beyond packet filtering more than a decade ago. In that time, it has changed a lot, becoming much more capable. Alexei Starovoitov kicked off the second day of the BPF track at the 2024 Linux Storage, Filesystem, Memory Management, and BPF Summit by leading a session discussing which changes to BPF are going to come in the next ten years as it continues evolving. He proposed several ideas, including expanding the number of registers available to BPF programs, dynamic deadlock detection, and relaxing some existing limits of the verifier.

daroc

Security updates for Friday

1 év 3 hónap óta
Security updates have been issued by Mageia (libtiff), Oracle (cockpit, glibc, kernel, less, libxml2, linux-kernel, and tomcat), Red Hat (java-1.8.0-ibm, nghttp2, and ruby:3.3), Slackware (php), SUSE (go1.21, go1.22, and python-docker), and Ubuntu (aom and libvpx).
daroc