{"id":113876,"date":"2024-02-26T22:02:49","date_gmt":"2024-02-26T20:02:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek"},"modified":"2024-02-26T22:02:49","modified_gmt":"2024-02-26T20:02:49","slug":"uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek","status":"publish","type":"post","link":"https:\/\/prohoster.info\/nl\/blog\/news\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek","title":{"rendered":"Kwetsbaarheden in de Linux-kernel die ksmbd, ktls, uio en de netstack be\u00efnvloeden","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>In de ksmbd-module, die een ingebouwde bestandserver op basis van het SMB-protocol biedt binnen de Linux-kernel, zijn twee kwetsbaarheden ontdekt die het mogelijk maken om op afstand, zonder authenticatie, code met kernelrechten uit te voeren of de inhoud van de kernelgeheugen te bepalen op systemen met de geactiveerde ksmbd-module. De problemen doen zich voor vanaf kernelversie 5.15, waarin de ksmbd-module is opgenomen. De kwetsbaarheden zijn verholpen in de kernelupdates 6.7.2, 6.6.14, 6.1.75 en 5.15.145. De correkties in de distributies kunnen worden gevolgd op de volgende pagina's: Debian, Ubuntu, Gentoo, RHEL, SUSE, Fedora, Arch.     <\/p>\n<p>De eerste kwetsbaarheid (CVE-2024-26592) kan leiden tot de uitvoering van code van de aanvaller met kernelrechten door speciaal opgestelde niet-geauthenticeerde TCP-verzoeken naar <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/dts-shicago\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2885\">server<\/a> ksmbd. De kwetsbaarheid wordt veroorzaakt door een onjuiste organisatie van het vergrendelingsmechanisme van objecten in de code voor het opzetten en onderbreken van TCP-verbindingen naar ksmbd, waardoor het mogelijk is om te verwijzen naar al vrijgegeven geheugen (use-after-free).       <\/p>\n<p>De tweede kwetsbaarheid (CVE-2024-26594) leidt tot een lek van de inhoud van de kernelgeheugen bij de verwerking van een onjuiste mech-token in een verzoek voor sessie-instelling verzonden door de client. De kwetsbaarheid wordt veroorzaakt door een onjuiste verwerking van gegevens met een SMB2 Mech-token en leidt tot het lezen van gegevens buiten de gereserveerde buffer.    <\/p>\n<p>Daarnaast kunnen we nog enkele andere kwetsbaarheden in de Linux-kernel opmerken:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-52439 \u2014 toegang tot al vrijgegeven geheugen (use-after-free) in de functie uio_open van de uio-subsystemen, potentieel in staat om een lokale gebruiker zijn code met kernelrechten te laten uitvoeren.\n<li class=\"l\"> CVE-2024-26582 \u2014 toegang tot al vrijgegeven geheugen (use-after-free) in de implementatie van TLS op kernel-niveau (ktls), potentieel in staat om zijn bevoegdheden te verhogen tijdens decryptie-activiteiten.\n<li class=\"l\"> CVE-2024-0646 \u2014 schrijven naar geheugen buiten de buffer in de ktls-subsystemen bij specifieke lokale manipulaties met de ktls-socket via de splice-functie. Deze kwetsbaarheid kan potentieel leiden tot verhoogde systeembevoegdheden.\n<li class=\"l\"> CVE-2023-6932 \u2014 raceconditie in de implementatie van het IGMP-protocol (Internet Group Management Protocol) in de IPv4-stack, leidend tot toegang tot al vrijgegeven geheugen (use-after-free). Deze kwetsbaarheid kan potentieel een lokale gebruiker in staat stellen zijn bevoegdheden in het systeem te verhogen.\n<li class=\"l\"> CVE-2023-52435 \u2014 MSS-overloop in de functie skb_segment() van de netstack van de kernel.\n<li class=\"l\"> CVE-2024-26601 \u2014 een fout in de code voor het vrijgeven van blokken in het ext4-bestandssysteem kan worden gebruikt om de buddy-bitmap te beschadigen.\n<li class=\"l\"> CVE-2024-26598 \u2014 toegang tot al vrijgegeven geheugen (use-after-free) in de hypervisor. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/vps\/abuzoustojchivye-vps\/\"   title=\"KVM\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4386\">KVM<\/a>.        <\/ul>\n<p>Bron: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60668\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u043c \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0432 \u044f\u0434\u0440\u043e Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SMB, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0431\u0435\u0437 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u044f\u0434\u0440\u0430 \u0438\u043b\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 \u044f\u0434\u0440\u0430 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043c\u043e\u0434\u0443\u043b\u0435\u043c ksmbd. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 5.15, \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0431\u044b\u043b \u043f\u0440\u0438\u043d\u044f\u0442 \u043c\u043e\u0434\u0443\u043b\u044c ksmbd. [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-113876","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u043c \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0432 \u044f\u0434\u0440\u043e Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SMB, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0431\u0435\u0437 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/nl\/blog\/news\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"nl_NL\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u044f\u0434\u0440\u0435 Linux, \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0449\u0438\u0435 ksmbd, ktls, uio \u0438 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u0441\u0442\u0435\u043a | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u043c \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0432 \u044f\u0434\u0440\u043e Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SMB, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0431\u0435\u0437 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/nl\/blog\/news\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek\" \/>\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=\"2024-02-26T20:02:49+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-02-26T20:02:49+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\udd47Kwetsbaarheden in de Linux-kernel die ksmbd, ktls, uio en de netwerkstack raken | ProHoster","description":"In de ksmbd-module, die een ingebouwde Linux-kernelimplementatie van een bestandsserver op basis van het SMB-protocol biedt, zijn twee kwetsbaarheden ontdekt die het mogelijk maken om op afstand zonder authenticatie uitvoering van eigen code te verkrijgen.","canonical_url":"https:\/\/prohoster.info\/nl\/blog\/news\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"nl_NL","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\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u044f\u0434\u0440\u0435 Linux, \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0449\u0438\u0435 ksmbd, ktls, uio \u0438 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u0441\u0442\u0435\u043a | ProHoster","og:description":"\u0412 \u043c\u043e\u0434\u0443\u043b\u0435 ksmbd, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u043c \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0432 \u044f\u0434\u0440\u043e Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SMB, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0431\u0435\u0437 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e.","og:url":"https:\/\/prohoster.info\/nl\/blog\/news\/uyazvimosti-v-yadre-linux-zatragivayushhie-ksmbd-ktls-uio-i-setevoj-stek","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":"2024-02-26T20:02:49+00:00","article:modified_time":"2024-02-26T20:02:49+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"113876","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-02-09 21:41:57","updated":"2026-02-09 21:41:57","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/posts\/113876","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/comments?post=113876"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/posts\/113876\/revisions"}],"predecessor-version":[{"id":164263,"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/posts\/113876\/revisions\/164263"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/media?parent=113876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/categories?post=113876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/nl\/wp-json\/wp\/v2\/tags?post=113876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}