{"id":170100,"date":"2026-04-30T12:24:42","date_gmt":"2026-04-30T10:24:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/cve-2026-31431-lokalnaya-uyazvimost-s-povysheniem-privilegij-vo-vseh-sovremennyh-linux"},"modified":"2026-04-30T12:24:42","modified_gmt":"2026-04-30T10:24:42","slug":"cve-2026-31431-lokalnaya-uyazvimost-s-povysheniem-privilegij-vo-vseh-sovremennyh-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/cve-2026-31431-lokalnaya-uyazvimost-s-povysheniem-privilegij-vo-vseh-sovremennyh-linux","title":{"rendered":"CVE-2026-31431: lokale Schwachstelle zur Erh\u00f6hung von Rechten in allen modernen Linux-Systemen.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <noindex><\/p>\n<p>Details zur Sicherheitsanf\u00e4lligkeit \u201eCopy Fail\u201c ver\u00f6ffentlicht <a rel=\"nofollow\" href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-31431\">CVE-2026-31431<\/a> (Basisbewertung: 7.8 HOCH), die lokalen Zugriff auf root eines beliebigen lokalen Benutzers ohne spezielle Mittel und Bedingungen erm\u00f6glicht. Betroffen sind die meisten Systeme, die seit 2017 ver\u00f6ffentlicht wurden.<\/p>\n<p><\/noindex><\/noindex><\/p>\n<p>Die Schwachstelle h\u00e4ngt mit einem Fehler in authencesn \u2014 einem kryptographischen Muster im Linux-Kernel \u2014 zusammen und wird \u00fcber die AF_ALG-Schnittstelle ausgenutzt.<\/p>\n<p>Ein Exploit mit Code in Python ist mit 732 Byte verf\u00fcgbar.<\/p>\n<p>F\u00fcr alle Mehrbenutzersysteme und isolierten Umgebungen wird empfohlen, das Kernel auf die Version mit dem Rollback des Commits 72548b093ee3 bei der Ver\u00f6ffentlichung von Patches zu aktualisieren.<\/p>\n<p>Eine effektive Ma\u00dfnahme zur Schlie\u00dfung der Schwachstelle bis zum Update besteht darin, das Modul algif_aead im Kernel zu deaktivieren. Seine Deaktivierung hat keinen merklichen Einfluss auf Systeme, in denen die Mittel der Kryptographie nicht ausdr\u00fccklich f\u00fcr den Betrieb ausschlie\u00dflich \u00fcber AF_ALG konfiguriert sind.<\/p>\n<p>Quelle: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/security\/18278962\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 &laquo;Copy Fail&raquo; CVE-2026-31431 (Base Score: 7.8 HIGH), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0435 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u0434\u043e root \u043b\u044e\u0431\u043e\u0433\u043e \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0431\u0435\u0437 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0440\u0435\u0434\u0441\u0442\u0432 \u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u0439. \u0417\u0430\u0442\u0440\u043e\u043d\u0443\u0442\u044b \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u0441\u0438\u0441\u0442\u0435\u043c, \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u044b\u0445 \u0441 2017 \u0433\u043e\u0434\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u0432 authencesn \u2014 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0448\u0430\u0431\u043b\u043e\u043d\u0435 \u0432 \u044f\u0434\u0440\u0435 Linux \u2014 \u0438 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 AF_ALG. \u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442 \u0441 \u043a\u043e\u0434\u043e\u043c \u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-170100","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" 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\u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435\u043c \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u0432\u043e \u0432\u0441\u0435\u0445 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 Linux | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u00abCopy Fail\u00bb CVE-2026-31431 (Base Score: 7.8 HIGH), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0435 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u0434\u043e root \u043b\u044e\u0431\u043e\u0433\u043e \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0433\u043e 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\u0447\u0435\u0440\u0435\u0437 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 AF_ALG. \u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442 \u0441 \u043a\u043e\u0434\u043e\u043c \u043d\u0430\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/cve-2026-31431-lokalnaya-uyazvimost-s-povysheniem-privilegij-vo-vseh-sovremennyh-linux\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2026-04-30T10:24:42+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-04-30T10:24:42+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47CVE-2026-31431: local privilege escalation vulnerability in all modern Linux | ProHoster","description":"Details of the vulnerability \"Copy Fail\" CVE-2026-31431 (Base Score: 7.8 HIGH) have been published, which allows for local privilege escalation to root by any local user without special tools or conditions. Most systems released since 2017 are affected. The vulnerability is linked to an error in authencesn \u2014 a cryptographic template in the Linux kernel \u2014 and is exploited through the AF_ALG interface. An exploit with code is available at","canonical_url":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/cve-2026-31431-lokalnaya-uyazvimost-s-povysheniem-privilegij-vo-vseh-sovremennyh-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"de_DE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47CVE-2026-31431: \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0441 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435\u043c \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u0432\u043e \u0432\u0441\u0435\u0445 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 Linux | ProHoster","og:description":"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u00abCopy Fail\u00bb CVE-2026-31431 (Base Score: 7.8 HIGH), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0435 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u0434\u043e root \u043b\u044e\u0431\u043e\u0433\u043e \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0431\u0435\u0437 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0440\u0435\u0434\u0441\u0442\u0432 \u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u0439. \u0417\u0430\u0442\u0440\u043e\u043d\u0443\u0442\u044b \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u0441\u0438\u0441\u0442\u0435\u043c, \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u044b\u0445 \u0441 2017 \u0433\u043e\u0434\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u0432 authencesn \u2014 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0448\u0430\u0431\u043b\u043e\u043d\u0435 \u0432 \u044f\u0434\u0440\u0435 Linux \u2014 \u0438 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 AF_ALG. \u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442 \u0441 \u043a\u043e\u0434\u043e\u043c \u043d\u0430","og:url":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/cve-2026-31431-lokalnaya-uyazvimost-s-povysheniem-privilegij-vo-vseh-sovremennyh-linux","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-04-30T10:24:42+00:00","article:modified_time":"2026-04-30T10:24:42+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/posts\/170100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/comments?post=170100"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/posts\/170100\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/media?parent=170100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/categories?post=170100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/de\/wp-json\/wp\/v2\/tags?post=170100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}