{"id":183167,"date":"2026-08-28T16:53:41","date_gmt":"2026-08-28T14:53:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/uyazvimosti-v-linux-i-freebsd-pozvolyayushhie-poluchit-root-dostup-v-sisteme"},"modified":"2026-08-28T16:53:43","modified_gmt":"2026-08-28T14:53:43","slug":"linux-and-freebsd-vulnerabilities-allowing-root-access","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/linux-and-freebsd-vulnerabilities-allowing-root-access","title":{"rendered":"Vulnerabilidades no Linux e FreeBSD que permitem obter acesso root no sistema","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>O FreeBSD corrigiu 8 vulnerabilidades que permitem aumentar privil\u00e9gios no sistema. As vulnerabilidades foram corrigidas nas atualiza\u00e7\u00f5es FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 e 14.4-RELEASE-p9.   <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-58094 \u2014 estado de corrida na implementa\u00e7\u00e3o da opera\u00e7\u00e3o ioctl FIOSSHMLPGCNF, utilizada para configurar o tamanho da p\u00e1gina da mem\u00f3ria compartilhada. O problema foi causado pela falta de bloqueio ao realizar a opera\u00e7\u00e3o de verifica\u00e7\u00e3o de altera\u00e7\u00e3o de tamanho, permitindo que o envio de duas solicita\u00e7\u00f5es simult\u00e2neas com tamanhos diferentes resultasse em par\u00e2metros incorretos do objeto.\n<li class=\"l\"> CVE-2026-58093 \u2014 acesso \u00e0 mem\u00f3ria ap\u00f3s seu desligamento na implementa\u00e7\u00e3o do ioctl TIOCSCTTY, utilizado para controlar o pseudoterminal. O problema foi causado por uma manipula\u00e7\u00e3o inadequada de bloqueios.\n<li class=\"l\"> CVE-2026-58095, CVE-2026-58096, CVE-2026-58097 \u2014 problemas na implementa\u00e7\u00e3o do protocolo PPP (Protocol Point-to-Point), causados por uma verifica\u00e7\u00e3o inadequada do tamanho dos par\u00e2metros processados.\n<li class=\"l\"> CVE-2026-58092 \u2014 erro l\u00f3gico no m\u00f3dulo mac_do, que fornece funcionalidade para executar comandos sob outro usu\u00e1rio. O problema foi causado pela altera\u00e7\u00e3o da estrutura de armazenamento das informa\u00e7\u00f5es sobre os direitos dos usu\u00e1rios \u2014 o identificador principal do grupo do usu\u00e1rio foi movido para uma estrutura separada, mas na fun\u00e7\u00e3o group_is_primary() essa altera\u00e7\u00e3o foi esquecida, e ela continuou a obter informa\u00e7\u00f5es a partir do antigo deslocamento.\n<li class=\"l\"> CVE-2026-58091 \u2014 acesso \u00e0 mem\u00f3ria ap\u00f3s seu desligamento na implementa\u00e7\u00e3o do ioctl SNDCTL_DSP_SYNCSTART, utilizado para iniciar a reprodu\u00e7\u00e3o de forma s\u00edncrona em v\u00e1rios dispositivos de som. A vulnerabilidade \u00e9 causada por uma manipula\u00e7\u00e3o inadequada de bloqueios e se manifesta em sistemas com v\u00e1rios dispositivos de som.\n<li class=\"l\"> CVE-2026-58090 \u2014 acesso \u00e0 mem\u00f3ria ap\u00f3s seu desligamento na implementa\u00e7\u00e3o de sockets UNIX, que ocorre durante o processamento de mensagens SOCK_STREAM.\n<li class=\"l\"> CVE-2026-58089 \u2014 erro l\u00f3gico no driver hwpmc, destinado a monitorar o desempenho, que faz com que a coleta de estat\u00edsticas n\u00e3o seja desativada ap\u00f3s a eleva\u00e7\u00e3o de privil\u00e9gios ao executar processos com suid root. O problema permite que um usu\u00e1rio comum monitore a atividade em processos privilegiados.\n<li class=\"l\"> CVE-2026-18798, CVE-2026-54874, CVE-2026-63072, CVE-2026-63073, CVE-2026-63074, CVE-2026-63075, CVE-2026-63076 \u2014 vulnerabilidades na biblioteca openssl, causadas por estouro de buffer, dupla libera\u00e7\u00e3o de mem\u00f3ria, problemas de formata\u00e7\u00e3o de string e desreferenciamento de ponteiro NULL. Potencialmente, alguns desses problemas n\u00e3o excluem a possibilidade de execu\u00e7\u00e3o remota de c\u00f3digo.    <\/ul>\n<p>V\u00e1rios problemas cr\u00edticos que permitem que um usu\u00e1rio local obtenha privil\u00e9gios de root tamb\u00e9m foram identificados no n\u00facleo do Linux:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-53361 \u2014 acesso \u00e0 mem\u00f3ria ap\u00f3s a sua libera\u00e7\u00e3o na implementa\u00e7\u00e3o de sockets AF_UNIX. Um exploit foi publicado publicamente, permitindo a sa\u00edda de um cont\u00eainer isolado. O funcionamento do exploit foi demonstrado no Ubuntu 24.04, RHEL 10 e Debian 13 com n\u00facleos Linux 6.8, 6.12, 6.14 e 6.17. O problema foi corrigido nas atualiza\u00e7\u00f5es do n\u00facleo 7.1.0, 6.18.38, 6.12.95 e 6.6.144.\n<li class=\"l\"> CVE-2026-72137 \u2014 duplo desperd\u00edcio de mem\u00f3ria no m\u00f3dulo nat_keepalive. O problema se manifesta a partir do n\u00facleo 6.11 e foi corrigido nas vers\u00f5es 7.2.0, 6.12.101, 6.18.40 e 7.1.5. Um exploit funcional foi publicado publicamente, permitindo obter privil\u00e9gios de root no sistema.\n<li class=\"l\"> Vulnerabilidades (CVE n\u00e3o atribu\u00eddo) no sistema de arquivos eCryptfs, potencialmente levando \u00e0 execu\u00e7\u00e3o de c\u00f3digo em n\u00edvel de n\u00facleo ao processar arquivos criptografados especialmente formatados.\n<li class=\"l\"> Vulnerabilidade (CVE n\u00e3o atribu\u00eddo) no m\u00f3dulo ntfs3, permitindo a substitui\u00e7\u00e3o de um arquivo execut\u00e1vel com o bit suid root ao montar uma imagem de sistema de arquivos especialmente formatada (um exemplo de explora\u00e7\u00e3o da vulnerabilidade para obter acesso root durante a montagem autom\u00e1tica de uma unidade USB \u00e9 mostrado).\n<li class=\"l\"> No total, em agosto, foram reveladas informa\u00e7\u00f5es sobre 1668 vulnerabilidades no n\u00facleo do Linux.    <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66158\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 \u0438 14.4-RELEASE-p9. CVE-2026-58094 &#8212; \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0433\u043e\u043d\u043a\u0438 \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 ioctl-\u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 FIOSSHMLPGCNF, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b \u0440\u0430\u0437\u0434\u0435\u043b\u044f\u0435\u043c\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u0432\u044b\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438 \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u043c\u0435\u0440\u0430, \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u043b\u043e \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0434\u0432\u0443\u0445 \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183167","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\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 \u0438 14.4-RELEASE-p9.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Alexander Kovalev\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/pt\/blog\/news\/linux-and-freebsd-vulnerabilities-allowing-root-access\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"pt_PT\" \/>\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 Linux \u0438 FreeBSD, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c root-\u0434\u043e\u0441\u0442\u0443\u043f \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 \u0438 14.4-RELEASE-p9.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/pt\/blog\/news\/linux-and-freebsd-vulnerabilities-allowing-root-access\" \/>\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=\"2026-08-28T14:53:41+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-08-28T14:53:43+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Vulnerabilidades no Linux e FreeBSD que permitem obter acesso root no sistema | ProHoster","description":"O FreeBSD corrigiu 8 vulnerabilidades que permitem aumentar privil\u00e9gios no sistema. As vulnerabilidades foram corrigidas nas atualiza\u00e7\u00f5es FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 e 14.4-RELEASE-p9.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/linux-and-freebsd-vulnerabilities-allowing-root-access","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","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 Linux \u0438 FreeBSD, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c root-\u0434\u043e\u0441\u0442\u0443\u043f \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 | ProHoster","og:description":"\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 \u0438 14.4-RELEASE-p9.","og:url":"https:\/\/prohoster.info\/pt\/blog\/news\/linux-and-freebsd-vulnerabilities-allowing-root-access","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":"2026-08-28T14:53:41+00:00","article:modified_time":"2026-08-28T14:53:43+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"183167","title":null,"description":null,"keywords":null,"keyphrases":{"focus":[],"additional":[]},"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":"2026-08-31 11:53:09","updated":"2026-08-31 11:53:09","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/183167","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/comments?post=183167"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/183167\/revisions"}],"predecessor-version":[{"id":183168,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/183167\/revisions\/183168"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/media?parent=183167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/categories?post=183167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/tags?post=183167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}