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Critical Linux TCP Use-After-Free Vulnerability Disclosed

Original: TCP Use-After-Free: CVE-2026-98432 / CVSS 9.8

A critical vulnerability in the Linux TCP/IP stack, tracked as CVE-2026-98432, has been disclosed with a CVSS score of 9.8. The flaw is described as a use-after-free bug in TCP handling that could allow attackers to remotely compromise affected systems. Engineers are discussing the technical details, severity ratings and the challenge of fixing memory-safety bugs in the kernel's networking code.

Why now: A maximum-severity remotely exploitable kernel bug in the TCP stack affects nearly every Linux system, drawing urgent attention from security practitioners.

Linux kernelCVE-2026-98432TCP/IP

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