Gistbyte - Hacker News Stories for April 30, 2026

1. Copy Fail: 732 Bytes to Root on Every Major Linux Distribution (xint.io)

Xint Code disclosed CVE-2026-31431, an authencesn scratch-write bug chaining AF_ALG + splice() into a 4-byte page cache write. A 732-byte PoC gets root on Ubuntu, Amazon Linux, RHEL, SUSE. | AI for Security, Vulnerability Research

15 points by eyalitki 175 days ago 2 comments

Visit 🤖 Summary

2. Claude Pro expired and my $40 in prepaid Extra Usage credits vanished

14 points by Aldipower 175 days ago 6 comments

🤖 Summary

3. Show HN: Throwaway – open-source disposable email checker and API (github.com)

An open source Cloudflare Worker app and API to check if email addresses are throwaway/disposable or valid - sslboard/throwaway

14 points by weddpros 175 days ago 11 comments

Visit 🤖 Summary

4. A 25-Year-Fight over a 2-Second Sample (www.plagiarismtoday.com)

In 1999, members of the band Kraftwerk filed a lawsuit in Germany that has lasted for nearly 30 years. Here’s what the fight is about and who won.

14 points by speckx 177 days ago 2 comments

Visit 🤖 Summary

5. Show HN: SigMap – 81.1% retrieval hit 5, 96.9% token reduce,zero deps (github.com)

97% token reduction for AI coding sessions — zero deps, 21 languages, MCP server - manojmallick/sigmap

13 points by manoj079 175 days ago 2 comments

Visit 🤖 Summary

6. Show HN: Qumulator – quantum circuit simulator, 1000 qubits, no GPU (github.com)

Python client SDK for the Qumulator quantum computing API - qumulator/qumulator-sdk

13 points by nnoorbakhsh 178 days ago 4 comments

Visit 🤖 Summary

7. The Human Creativity Benchmark – Evaluating Generative AI in Creative Work (contralabs.com)

The frontier human data and evaluation lab for creative AI. 1.5M+ verified creative experts setting the benchmark for style, tone, and taste with next-gen creative tools.

12 points by 0bytematt 175 days ago 1 comments

Visit 🤖 Summary

8. The UAE doubles down on Israel and America (www.economist.com)

12 points by andsoitis 175 days ago 0 comments

Visit 🤖 Summary

9. Show HN: Agent that refuses to run commands without human approval (github.com)

Contribute to few-sh/fewshell development by creating an account on GitHub.

11 points by hexer303 175 days ago 2 comments

Visit 🤖 Summary

10. Show HN: FusionCore: ROS 2 sensor fusion that outperforms robot_localization (github.com)

ROS 2 sensor fusion SDK: UKF, 3D native, proper GNSS, zero manual tuning. Apache 2.0. - manankharwar/fusioncore

11 points by kharwarm 177 days ago 2 comments

Visit 🤖 Summary

11. Ask HN: Is AI resulting in net revenue gain for non-tech companies?

10 points by jusonchan81 174 days ago 9 comments

🤖 Summary

12. Show HN: "Be horse." – a diffusion language model on an M2 Air (boesch.dev)

Building a tiny diffusion language model from scratch and training on an M2 MacBook Air

9 points by encrux 175 days ago 1 comments

Visit 🤖 Summary

13. Ask HN: Do you think AI will end up like dotcom?

9 points by dicksent 175 days ago 7 comments

🤖 Summary

14. Copy-fail-destroyer: K8s remediation for CVE-2026-31431 (github.com)

Contribute to NorskHelsenett/copy-fail-destroyer development by creating an account on GitHub.

8 points by evenh 175 days ago 2 comments

Visit 🤖 Summary

15. The Complete Claude Setup Checklist: 72 Steps from Default to Power User (medium.com)

7 points by jungard 175 days ago 0 comments

Visit 🤖 Summary

16. What I changed in how I use Claude Code after Anthropic's postmortem

7 points by cinooo 175 days ago 3 comments

🤖 Summary

17. Show HN: A programming language where the only token is the word "vibe" (wevibe.fyi)

a programming language where the only token is the word vibe

6 points by bonchicbongenre 175 days ago 1 comments

Visit 🤖 Summary

18. I Built a WebAssembly Runtime in 5 Days (tingouw.com)

Tingou Wu

6 points by marcosscriven 175 days ago 3 comments

Visit 🤖 Summary

19. Show HN: Bin collection calendars for the entire UK (ukbinday.co.uk)

6 points by chartreuseai 175 days ago 1 comments

Visit 🤖 Summary

20. Show HN: Task Manager for AI Agents (MCP, Opensource) (github.com)

AgentRQ App. Contribute to agentrq/agentrq development by creating an account on GitHub.

6 points by mrtnx 175 days ago 2 comments

Visit 🤖 Summary

21. Ask HN: Is Anybody Using Codex?

5 points by cl3misch 175 days ago 11 comments

🤖 Summary

22. Show HN: Hexlock – Replace PII in text with fake data that has the same format (github.com)

Contribute to ttarvis/hexlock development by creating an account on GitHub.

5 points by lemaudit 175 days ago 0 comments

Visit 🤖 Summary

23. Show HN: Flocklist, minimalist graph-based task tracker (flocklist.app)

Flocklist is a simple, offline-first task and dependency tracker. Visualize what's blocking your work with a text-based interface — nothing leaves your browser.

5 points by ilqr_jb 175 days ago 1 comments

Visit 🤖 Summary

24. Show HN: Modeleon – Python DSL that compiles to live Excel formulas (github.com)

Financial Model Engineering — Python code compiles to live Excel formulas - modeleonai/modeleon

5 points by adilkhanovkz 175 days ago 0 comments

Visit 🤖 Summary

25. Show HN: I built a zero-tracking news hub to escape doom scrolling at (AGE 17y)

5 points by blazeeofsun 175 days ago 0 comments

🤖 Summary

26. Show HN: NVIM config that I use with my agents (github.com)

Contribute to NishantJoshi00/nvim-config development by creating an account on GitHub.

5 points by cat-whisperer 175 days ago 0 comments

Visit 🤖 Summary

27. Show HN: Annotate and freeze screen recordings inside Chrome, no uploads (framepin.com)

Easily add freeze frames, shapes, and text to any screen recording. FramePin is a secure, browser-based video editor for creating clear tutorials.

4 points by ipselon 174 days ago 0 comments

Visit 🤖 Summary

28. Show HN: Free no-signup site auditor – secrets, subdomain takeover, CVEs (theionproject.com)

Instant website intelligence. Core Web Vitals, security, SEO, DNS, carbon footprint and more. No signup required.

4 points by TheIOn-Project 174 days ago 1 comments

Visit 🤖 Summary

29. Show HN: Copy-fail-C – portable C port of CVE-2026-31431, with a checker (github.com)

Cross-platform C port of the Copy Fail Linux LPE (CVE-2026-31431). Disclosed 2026-04-29 by Theori / Xint. - tgies/copy-fail-c

1. Copy Fail: 732 Bytes to Root on Every Major Linux Distribution (xint.io)

2. Claude Pro expired and my $40 in prepaid Extra Usage credits vanished

3. Show HN: Throwaway – open-source disposable email checker and API (github.com)

4. A 25-Year-Fight over a 2-Second Sample (www.plagiarismtoday.com)

5. Show HN: SigMap – 81.1% retrieval hit 5, 96.9% token reduce,zero deps (github.com)

6. Show HN: Qumulator – quantum circuit simulator, 1000 qubits, no GPU (github.com)

7. The Human Creativity Benchmark – Evaluating Generative AI in Creative Work (contralabs.com)

8. The UAE doubles down on Israel and America (www.economist.com)

9. Show HN: Agent that refuses to run commands without human approval (github.com)

10. Show HN: FusionCore: ROS 2 sensor fusion that outperforms robot_localization (github.com)

11. Ask HN: Is AI resulting in net revenue gain for non-tech companies?

12. Show HN: "Be horse." – a diffusion language model on an M2 Air (boesch.dev)

13. Ask HN: Do you think AI will end up like dotcom?

14. Copy-fail-destroyer: K8s remediation for CVE-2026-31431 (github.com)

15. The Complete Claude Setup Checklist: 72 Steps from Default to Power User (medium.com)

16. What I changed in how I use Claude Code after Anthropic's postmortem

17. Show HN: A programming language where the only token is the word "vibe" (wevibe.fyi)

18. I Built a WebAssembly Runtime in 5 Days (tingouw.com)

19. Show HN: Bin collection calendars for the entire UK (ukbinday.co.uk)

20. Show HN: Task Manager for AI Agents (MCP, Opensource) (github.com)

21. Ask HN: Is Anybody Using Codex?

22. Show HN: Hexlock – Replace PII in text with fake data that has the same format (github.com)

23. Show HN: Flocklist, minimalist graph-based task tracker (flocklist.app)

24. Show HN: Modeleon – Python DSL that compiles to live Excel formulas (github.com)

25. Show HN: I built a zero-tracking news hub to escape doom scrolling at (AGE 17y)

26. Show HN: NVIM config that I use with my agents (github.com)

27. Show HN: Annotate and freeze screen recordings inside Chrome, no uploads (framepin.com)

28. Show HN: Free no-signup site auditor – secrets, subdomain takeover, CVEs (theionproject.com)

29. Show HN: Copy-fail-C – portable C port of CVE-2026-31431, with a checker (github.com)

30. What do you want to see in a next-generation GitHub in the age of AI?

Article Details

Browse by Date

Notable Dates