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Ubuntu

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Headlines · 3

  1. Claude Reportedly Finds 11-Year-Old Linux Kernel Flaw

    Anthropic security research reportedly found CVE-2026-98432, a network-reachable use-after-free flaw in the Linux kernel's IPv4 TCP handshake handling. The report says an unpublished internal Claude model discovered the issue and generated a two-stage exploit that bypassed kernel address randomization and executed commands with Root privileges, although the exploit code was not released. Upstream fixes are available, but the cited report says several Ubuntu releases remained affected as of November 1.

    cnBeta · 🔥 12
  2. Linux CVE-2026-98432 Exposes IPv4 TCP Use-After-Free

    Linux kernel CVE-2026-98432 is a remotely reachable use-after-free in the IPv4 TCP handshake, rated CVSS 3.1 9.8 Critical by the Linux kernel CNA. Fixes have shipped in multiple upstream branches, including 6.12.113 and 6.18.56, but Ubuntu, RHEL 8, RHEL 9, RHEL 10 and other distribution packages remained vulnerable as of October 29. Anthropic separately reported that an undisclosed Claude research model wrote a working proof-of-concept exploit against Linux servers with an MPTCP listener, though that claim was not independently verified in the supplied evidence.

    Hacker News 首页（100+ 分） · 🔥 1
  3. Linux 7.4 development merges Kbuild patches aimed at faster kernel builds

    Linux 7.4's development branch has merged a batch of Kbuild changes that target single-threaded bottlenecks and repeated work in the kernel build process, according to a cnBeta report. The merged work, proposed by Arm engineer and longtime kernel developer Lorenzo Stoakes, includes cutting .modinfo section allocation overhead, speeding up kallsyms generation, skipping nm output sorting when order does not matter, generating relocation information only at the final link, rewriting mksysmap in C, caching some compiler and linker capability checks in Kconfig, and preferring pigz for gzip compression when installed. Early testing cited for the full patch series showed allmodconfig builds about 36% faster, incremental builds about 70% faster and no-op builds up to about 90% faster, while Phoronix's test of v4 on a dual-socket AMD EPYC 9575F server running Ubuntu 26.04 LTS cut a clean x86_64 defconfig build from roughly 22 seconds to 15–17 seconds; the report notes those figures cover the whole series, not only the subset merged so far.

    cnBeta · 🔥 0

Experience and discussion from the community

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AI Coding•聪逗•Experience

Implementing Local Development, Git Commits, and Automated Server Deployment with DeepSeek Harness

My current development workflow for my own projects is to use agent tools like deepseek harness locally to write code and make git commits, then install deepseek harness on the server and connect to it through a tunnel, allowing the server-side deepseek harness to handle deployment. The server is Ubuntu, and the local Mac establishes the tunnel connection. Deployment only requires sending a deploy…

DeepSeek HarnessGitMac

General•Tianle Wang (anatman)•Experience

Hi, everyone!

Hi, everyone! I'm Anatman, and I'm very pleased to be helping build an emerging community! Let me share some insights from using Isaac Sim recently. I'm running Isaac Sim with Docker Compose on Ubuntu 24.04 using a Python 3.12 venv, and I've set up some code assistance and a development environment. I'm currently using the pyright + Helix development tools. To configure accurate and efficient cod…

Docker