{"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\/es\/blog\/news\/linux-and-freebsd-vulnerabilities-allowing-root-access","title":{"rendered":"Vulnerabilidades en Linux y FreeBSD que permiten obtener acceso root en el sistema","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En FreeBSD se han corregido 8 vulnerabilidades que permiten elevar privilegios en el sistema. Las vulnerabilidades han sido solucionadas en las actualizaciones FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 y 14.4-RELEASE-p9.   <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-58094 \u2014 condici\u00f3n de carrera en la implementaci\u00f3n de la operaci\u00f3n ioctl FIOSSHMLPGCNF, utilizada para configurar el tama\u00f1o de la p\u00e1gina de memoria compartida. El problema es causado por la falta de bloqueo durante la operaci\u00f3n de verificaci\u00f3n del cambio de tama\u00f1o, lo que permit\u00eda obtener par\u00e1metros incorrectos del objeto al enviar dos solicitudes simult\u00e1neas con diferentes tama\u00f1os.\n<li class=\"l\"> CVE-2026-58093 \u2014 acceso a la memoria despu\u00e9s de ser liberada en la implementaci\u00f3n de ioctl TIOCSCTTY, utilizado para gestionar un pseudoterminal. El problema es causado por un manejo incorrecto de los bloqueos.\n<li class=\"l\"> CVE-2026-58095, CVE-2026-58096, CVE-2026-58097 \u2014 problemas en la implementaci\u00f3n del protocolo PPP (Protocolo Punto a Punto) causados por una verificaci\u00f3n incorrecta del tama\u00f1o de los par\u00e1metros procesados.\n<li class=\"l\"> CVE-2026-58092 \u2014 error l\u00f3gico en el m\u00f3dulo mac_do, que proporciona funcionalidad para ejecutar comandos como otro usuario. El problema es causado por un cambio en la estructura de almacenamiento de la informaci\u00f3n sobre los derechos de los usuarios: el identificador principal del grupo de usuarios fue trasladado a una estructura separada, pero en la funci\u00f3n group_is_primary() este cambio no se reflej\u00f3 y continu\u00f3 obteniendo informaci\u00f3n seg\u00fan la antigua posici\u00f3n.\n<li class=\"l\"> CVE-2026-58091 \u2014 acceso a la memoria despu\u00e9s de ser liberada en la implementaci\u00f3n de ioctl SNDCTL_DSP_SYNCSTART, utilizado para iniciar de forma sincronizada la reproducci\u00f3n en m\u00faltiples dispositivos de sonido. La vulnerabilidad es causada por un manejo incorrecto de los bloqueos y se manifiesta en sistemas con m\u00faltiples dispositivos de sonido.\n<li class=\"l\"> CVE-2026-58090 \u2014 acceso a la memoria despu\u00e9s de ser liberada en la implementaci\u00f3n de sockets UNIX, que ocurre durante el procesamiento de mensajes SOCK_STREAM.\n<li class=\"l\"> CVE-2026-58089 \u2014 error l\u00f3gico en el controlador hwpmc, destinado a seguimiento de rendimiento, que causa que la recopilaci\u00f3n de estad\u00edsticas no se desactive despu\u00e9s de aumentar privilegios al ejecutar procesos con suid root. El problema permite a un usuario normal rastrear la actividad en procesos 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 en la biblioteca openssl, causadas por desbordamiento de b\u00fafer, doble liberaci\u00f3n de memoria, problemas con el formato de cadenas y desreferenciaci\u00f3n de punteros NULL. Potencialmente, algunos de estos problemas no descartan la posibilidad de ejecuci\u00f3n remota de c\u00f3digo.    <\/ul>\n<p>Se han identificado varios problemas cr\u00edticos que permiten a un usuario local obtener derechos de root en el n\u00facleo de Linux:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-53361 \u2014 acceso a la memoria despu\u00e9s de su liberaci\u00f3n en la implementaci\u00f3n de sockets AF_UNIX. Se ha publicado un exploit que permite escapar de un contenedor aislado. La funcionalidad del exploit se ha demostrado en Ubuntu 24.04, RHEL 10 y Debian 13 con n\u00facleos de Linux 6.8, 6.12, 6.14 y 6.17. El problema se ha solucionado en las actualizaciones de n\u00facleo 7.1.0, 6.18.38, 6.12.95 y 6.6.144.\n<li class=\"l\"> CVE-2026-72137 \u2014 doble liberaci\u00f3n de memoria en el m\u00f3dulo nat_keepalive. El problema se manifiesta a partir del n\u00facleo 6.11 y se ha solucionado en las versiones 7.2.0, 6.12.101, 6.18.40 y 7.1.5. Se ha publicado un exploit funcional que permite obtener privilegios de root en el sistema.\n<li class=\"l\"> Vulnerabilidades (CVE no asignado) en el sistema de archivos eCryptfs, que potencialmente permiten la ejecuci\u00f3n de c\u00f3digo a nivel de n\u00facleo al procesar archivos cifrados especialmente dise\u00f1ados.\n<li class=\"l\"> Vulnerabilidad (CVE no asignado) en el m\u00f3dulo ntfs3, que permite la sustituci\u00f3n de un archivo ejecutable con el bit suid root al montar una imagen de sistema de archivos especialmente dise\u00f1ada (se muestra un ejemplo de explotaci\u00f3n de la vulnerabilidad para obtener derechos de root durante el montaje autom\u00e1tico de un dispositivo USB).\n<li class=\"l\"> En total, durante agosto se han revelado 1668 vulnerabilidades en el n\u00facleo de Linux.    <\/ul>\n<p>Fuente: <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 5.0.4 - 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Las vulnerabilidades han sido solucionadas en las actualizaciones FreeBSD 15.1-RELEASE-p3, FreeBSD 15.0-RELEASE-p13 y 14.4-RELEASE-p9.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/linux-and-freebsd-vulnerabilities-allowing-root-access","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","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 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