Linux Kernel TCP Flaw With 9.8 CVSS Score Affects Ubuntu, Red Hat and Other Distributions

A flaw in the Linux kernel’s TCP code, tracked as CVE-2026-98432 and rated CVSS 9.8, affects Ubuntu, Red Hat Enterprise Linux and other distributions, The Hacker News reports. Anthropic said on October 27 that its AI model wrote an exploit using the flaw to let a remote attacker with no credentials run commands as root on Linux servers.