{"id":36639,"date":"2019-10-31T22:12:50","date_gmt":"2019-10-31T19:12:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/drajver-floppi-diskov-ostavlen-v-yadre-linux-bez-soprovozhdeniya\/"},"modified":"2019-10-31T22:12:50","modified_gmt":"2019-10-31T19:12:50","slug":"drajver-floppi-diskov-ostavlen-v-yadre-linux-bez-soprovozhdeniya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/drajver-floppi-diskov-ostavlen-v-yadre-linux-bez-soprovozhdeniya","title":{"rendered":"O driver de disquete foi deixado no n\u00facleo do Linux sem suporte","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

O n\u00facleo do Linux 5.3 foram aceitas<\/a><\/noindex> inclui altera\u00e7\u00f5es com a adi\u00e7\u00e3o de prote\u00e7\u00e3o adicional para chamadas ioctl relacionadas ao driver de floppy, que \u00e9 marcado como sem suporte
\n(\"\u00f3rf\u00e3o\"), o que implica a interrup\u00e7\u00e3o de seus testes.<\/p>\n

O driver \u00e9 considerado obsoleto, pois \u00e9 dif\u00edcil encontrar hardware funcional para test\u00e1-lo \u2014 todos os dispositivos externos relevantes geralmente utilizam a interface USB. No entanto, a remo\u00e7\u00e3o do driver do n\u00facleo \u00e9 dificultada pelo fato de que os controladores de disquetes ainda s\u00e3o emulados em sistemas de virtualiza\u00e7\u00e3o. Portanto, o driver permanece no n\u00facleo por enquanto, mas seu funcionamento correto n\u00e3o \u00e9 garantido.<\/p>\n

Al\u00e9m disso, no driver floppy no lan\u00e7amento<\/a><\/noindex> uma vulnerabilidade<\/a><\/noindex> (CVE-2019-14283<\/a><\/noindex>), que permite, por meio de manipula\u00e7\u00f5es com ioctl, que um usu\u00e1rio n\u00e3o privilegiado, que tenha a capacidade de inserir seu pr\u00f3prio disco floppy, leia dados de \u00e1reas de mem\u00f3ria al\u00e9m dos limites do buffer de c\u00f3pia (por exemplo, \u00e1reas adjacentes podem conter dados residuais do cache de disco e do buffer de entrada). Por um lado, a vulnerabilidade continua relevante, pois o driver floppy \u00e9 carregado automaticamente quando h\u00e1 um controlador emulado correspondente em sistemas de virtualiza\u00e7\u00e3o (por exemplo, utilizado por padr\u00e3o no QEMU), mas, por outro lado, a explora\u00e7\u00e3o do problema exige que uma imagem de disco floppy preparada pelo atacante esteja conectada.<\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux 5.3 \u043f\u0440\u0438\u043d\u044f\u0442\u044b \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0441 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u044b ioctl-\u0432\u044b\u0437\u043e\u0432\u043e\u0432, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u043e\u043c floppy, \u0430 \u0441\u0430\u043c \u0434\u0440\u0430\u0439\u0432\u0435\u0440 \u043f\u043e\u043c\u0435\u0447\u0435\u043d \u043a\u0430\u043a \u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0439 \u0431\u0435\u0437 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u044f («orphaned»), \u0447\u0442\u043e \u043f\u043e\u0434\u0440\u0430\u0437\u0443\u043c\u0435\u0432\u0430\u0435\u0442 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\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 USB. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c […]<\/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-36639","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47O driver de discos floppy permanece no n\u00facleo do Linux sem suporte | ProHoster","description":"O n\u00facleo do Linux 5.3 incorpora altera\u00e7\u00f5es com a adi\u00e7\u00e3o de prote\u00e7\u00e3o 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