{"id":246177,"date":"2026-10-30T03:50:41","date_gmt":"2026-10-30T08:50:41","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/10\/linux-kernel-tcp-flaw-with-9-8-cvss-score-affects-ubuntu-red-hat-and-other-distributions"},"modified":"2026-10-30T03:50:41","modified_gmt":"2026-10-30T08:50:41","slug":"linux-kernel-tcp-flaw-with-9-8-cvss-score-affects-ubuntu-red-hat-and-other-distributions","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/10\/linux-kernel-tcp-flaw-with-9-8-cvss-score-affects-ubuntu-red-hat-and-other-distributions","title":{"rendered":"Linux Kernel TCP Flaw With 9.8 CVSS Score Affects Ubuntu, Red Hat and Other Distributions"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.anthropic.com\/research\/discovering-vulnerabilities-with-claude\" target=\"_blank\">Anthropic said<\/a> on October 27 that its AI model wrote an exploit that uses the flaw to let a remote attacker with no credentials run commands as root on Linux servers with a multipath TCP listener.<\/p>\n<p>As of October 29, Ubuntu and RHEL have not released a fixed kernel. Red Hat, Amazon, Oracle, and SUSE score the flaw between 5.9 and 8.1, lower than the kernel team\u2019s 9.8.<\/p>\n<p>The flaw is a race condition in the code that sets up new IPv4 TCP connections. It can make the kernel read memory it has already freed, a bug type known as a use-after-free.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anthropic said on October 27 that its AI model wrote an exploit that uses the flaw to let a remote attacker with no credentials run commands as root on Linux servers with a multipath TCP listener. As of October 29, Ubuntu and RHEL have not released a fixed kernel. Red Hat, Amazon, Oracle, and SUSE [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-246177","post","type-post","status-publish","format-standard","hentry","category-robotics-ai"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/246177","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=246177"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/246177\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=246177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=246177"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=246177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}