{"id":9607,"date":"2026-06-10T12:01:19","date_gmt":"2026-06-10T12:01:19","guid":{"rendered":"https:\/\/news.theck1.no\/?p=9607"},"modified":"2026-06-10T12:01:19","modified_gmt":"2026-06-10T12:01:19","slug":"high-severity-vulnerability-in-linux-caused-by-a-single-faulty-character","status":"publish","type":"post","link":"https:\/\/news.theck1.no\/?p=9607","title":{"rendered":"High-severity vulnerability in Linux caused by a single faulty character"},"content":{"rendered":"<div style=\"margin-bottom:1em; color:#666; font-size:0.9em;\">\n<strong><br \/>\n                    Dan Goodin<br \/>\n                <\/strong><br \/>\n &bull;<br \/>\nJune 9, 2026\n<\/div>\n<hr\/>\n<p>Researchers have analyzed a high-severity vulnerability in Linux that\u2019s able to escalate untrusted users to root by exploiting a bug you don&#8217;t often see: a single errant character inside the kernel.<\/p>\n<p>The vulnerability, tracked as <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-23111\">CVE-2026-23111<\/a>, is located in nf_tables, a subsystem of the Linux kernel that provides packet filtering capabilities. It\u2019s used to manage firewall rules and replaces older subsystems such as iptables, ip6tables, arptables, and ebtables.<\/p>\n<h2>!!!WTF!!!<\/h2>\n<p>The presence of a single mis-issued exclamation point in code implementing nf_tables introduced a use-after-free, a class of vulnerability that corrupts memory by placing malicious code at memory addresses that haven\u2019t been properly freed of their previous contents. CVE-2026-23111 can be exploited by an unprivileged user or process to elevate system rights to root.<\/p>\n<p><a href=\"https:\/\/arstechnica.com\/security\/2026\/06\/a-single-errant-character-in-the-linux-kernel-allows-attacker-to-gain-root\/\">Read full article<\/a><\/p>\n<p><a href=\"https:\/\/arstechnica.com\/security\/2026\/06\/a-single-errant-character-in-the-linux-kernel-allows-attacker-to-gain-root\/#comments\">Comments<\/a><\/p>\n<p style=\"margin-top:1.5em;\"><a href=\"https:\/\/arstechnica.com\/security\/2026\/06\/a-single-errant-character-in-the-linux-kernel-allows-attacker-to-gain-root\/\" target=\"_blank\" rel=\"noopener\">Read the full article &rarr;<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dan Goodin &bull; June 9, 2026 Researchers have analyzed a high-severity vulnerability in Linux that\u2019s able to escalate untrusted users to root by exploiting a bug you don&#8217;t often see: a single errant character inside the kernel. The vulnerability, tracked as CVE-2026-23111, is located in nf_tables, a subsystem of the Linux kernel that provides packet<\/p>\n<p class=\"more-link\"><a href=\"https:\/\/news.theck1.no\/?p=9607\" class=\"themebutton2\">READ MORE<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-9607","post","type-post","status-publish","format-standard","hentry","category-artificial-intelligence"],"_links":{"self":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/posts\/9607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9607"}],"version-history":[{"count":0,"href":"https:\/\/news.theck1.no\/index.php?rest_route=\/wp\/v2\/posts\/9607\/revisions"}],"wp:attachment":[{"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.theck1.no\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}