Is itCheck something

No. CVE-2026-98432

A Linux network flaw can crash servers or let attackers in

Watch

Watch it. Not confirmed in attacks yet.

Anyone running Linux servers, including container hosts and Kubernetes nodes.

What to do

Install your Linux distribution's kernel update and reboot.

GitHub repos53
Social interactions17.6M
Attack likelihood, next 30 daysunder 1%

Attack likelihood is EPSS, a daily estimate from FIRST.org of how likely this bug is to be used in attacks in the next 30 days.

The official description

A race condition in Linux's IPv4 TCP connection handling can expose kernel memory, crash a host, or allow remote code execution before application authentication.

What people are saying

Social attention, not a count of victims. Posts shown as written; we don't vouch for them. Data by LunarCrush.

  • International Cyber Digest · 270K followers · X
    ‼ Ubuntu and Red Hat still have no fix for a Linux kernel flaw that Anthropic says its unreleased AI model turned into a remote root exploit. The bug, CVE-2026-98432, is a use-after-free in the IPv4 TCP handshake, rated…Open post
  • Marcus Hutchins · 278K followers · X
    Update on the 9.8 CVSS TCP/IP RCE in the Linux kernel (CVE-2026-98432): we've detected what appears to be a threat actor activity scanning the entire internet for exposed affected systems. Our own scanning also suggests…Open post
  • Dark Web Informer · 259K followers · X
    Critical Linux kernel flaw could allow remote root code execution; CVE-2026-98432 A use-after-free vulnerability in the Linux IPv4 TCP handshake path allows an unauthenticated attacker to trigger memory corruption by…Open post
For your tech helper or AI assistant

A read-only checklist. Paste it into Claude, ChatGPT or a coding agent; it only looks and changes nothing.

Read-only check, change nothing, send nothing anywhere.
Is Linux IPv4 TCP use-after-free (CVE-2026-98432) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2026-98432. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.
Download playbook (.md)

Code on GitHub

Repos named after this bug. Some are scanners or write-ups, some are working attack code. Do not run them on a machine you care about.

Sources