---
format: "aidr-story-markdown/v1"
id: "f5078010ccfcfbb8b5302873304cf70092c76868e2534076ea277c8d29498d8b"
canonical_url: "https://aidr.today/f5078010?lang=en"
title: "Ubuntu and RHEL Still Lack Patches for Critical Linux Flaw Found by Anthropic AI"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-29T16:08:49.000Z"
category: "Research"
topics: ["anthropic","llm","open-source","safety"]
source_urls: ["https://marketbrief.now/cybersecurity/ubuntu-and-rhel-still-lack-patches-for-critical-linux-flaw-found-by-anth-f3e8aa14","https://huggingnews.com/cybersecurity/ubuntu-and-rhel-still-lack-patches-for-critical-linux-flaw-found-by-anth-f3e8aa14","https://lobste.rs/s/1sni1w/linux_kernel_tcp_flaw_with_9_8_cvss_score","https://thehackernews.com/2026/10/linux-kernel-tcp-flaw-with-98-cvss.html"]
summary: "A critical use-after-free vulnerability in the Linux kernel's TCP/IPv4 stack, identified as CVE-2026-98432 with a CVSS score of 9.8, remains unpatched in Ubuntu and RHEL, while Debian and Oracle have released patches for certain versions."
---

# Ubuntu and RHEL Still Lack Patches for Critical Linux Flaw Found by Anthropic AI

> [Open the canonical story](<https://aidr.today/f5078010?lang=en>)

**Published:** 2026-10-29T16:08:49.000Z
**Category:** Research
**Topics:** anthropic, llm, open\-source, safety

## Summary

A critical use\-after\-free vulnerability in the Linux kernel's TCP/IPv4 stack, identified as CVE\-2026\-98432 with a CVSS score of 9\.8, remains unpatched in Ubuntu and RHEL, while Debian and Oracle have released patches for certain versions\.

## Sources

- [Story source](<https://marketbrief.now/cybersecurity/ubuntu-and-rhel-still-lack-patches-for-critical-linux-flaw-found-by-anth-f3e8aa14>)
- [Story source](<https://huggingnews.com/cybersecurity/ubuntu-and-rhel-still-lack-patches-for-critical-linux-flaw-found-by-anth-f3e8aa14>)
- [Discussion](<https://lobste.rs/s/1sni1w/linux_kernel_tcp_flaw_with_9_8_cvss_score>)
- [Story source](<https://thehackernews.com/2026/10/linux-kernel-tcp-flaw-with-98-cvss.html>)

