Linus Torvalds pretendia lan\u00e7ar a vers\u00e3o do kernel Linux 6.13 neste domingo, mas \u00e9 prov\u00e1vel que o teste da vers\u00e3o 6.13 seja prorrogado por uma semana devido a problemas de estabilidade nas altera\u00e7\u00f5es feitas por um funcion\u00e1rio da Microsoft e aceitas na vers\u00e3o 6.13 em novembro. Al\u00e9m disso, observa-se que o patch que causou a falha foi submetido de forma n\u00e3o padr\u00e3o \u2014 mas foi aceito, embora n\u00e3o tenha recebido nenhuma confirma\u00e7\u00e3o (ACK) dos mantenedores da arquitetura x86, o que \u00e9 uma viola\u00e7\u00e3o das pr\u00e1ticas comuns. <\/p>\n
O patch adicionava a possibilidade de usar grandes p\u00e1ginas de mem\u00f3ria em modo ROX (Read Only Execute) ao alocar mem\u00f3ria destinada a armazenar c\u00f3digo execut\u00e1vel. O ROX permite utilizar mem\u00f3ria com c\u00f3digo execut\u00e1vel em modo somente leitura, o que dificulta a explora\u00e7\u00e3o de algumas vulnerabilidades. No n\u00facleo 6.13, o uso do cache de grandes p\u00e1ginas de mem\u00f3ria execut\u00e1vel, refletidas como ROX, foi ativado por padr\u00e3o para o c\u00f3digo execut\u00e1vel de m\u00f3dulos em sistemas x86_64. A altera\u00e7\u00e3o resolvia o problema de mapeamento em modo ROX de p\u00e1ginas para c\u00f3digos execut\u00e1veis ainda n\u00e3o totalmente formados, permitindo evitar o re-mapeamento tempor\u00e1rio de p\u00e1ginas ROX em modo de escrita at\u00e9 que a prepara\u00e7\u00e3o dos m\u00f3dulos do n\u00facleo para opera\u00e7\u00e3o estivesse conclu\u00edda. <\/p>\n
Na etapa final de testes do n\u00facleo 6.13, um engenheiro da Intel identificou uma falha que impedia o n\u00facleo de sair corretamente do modo de suspens\u00e3o em alguns laptops com processadores Intel (por exemplo, com CPU baseada na microarquitetura Alderlake). A falha se manifestava ao compilar o n\u00facleo com o compilador Clang com o modo de prote\u00e7\u00e3o CFI (Control Flow Integrity) ativado, que bloqueia viola\u00e7\u00f5es da ordem normal de execu\u00e7\u00e3o (control flow) devido \u00e0 aplica\u00e7\u00e3o de exploits que alteram os ponteiros das fun\u00e7\u00f5es armazenados na mem\u00f3ria. Como solu\u00e7\u00e3o tempor\u00e1ria, os mantenedores das empresas Intel e AMD, respons\u00e1veis pela arquitetura x86, sugeriram desativar o uso de EXECMEM_ROX no n\u00facleo 6.13, at\u00e9 que um patch completo para resolver o problema seja preparado e testado (a primeira op\u00e7\u00e3o de corre\u00e7\u00e3o n\u00e3o resolveu o problema). \u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441 \u043d\u0430\u043c\u0435\u0440\u0435\u0432\u0430\u043b\u0441\u044f \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u0442\u044c \u0440\u0435\u043b\u0438\u0437 \u044f\u0434\u0440\u0430 Linux 6.13 \u0432 \u044d\u0442\u043e \u0432\u043e\u0441\u043a\u0440\u0435\u0441\u0435\u043d\u044c\u0435, \u043d\u043e \u0441\u043a\u043e\u0440\u0435\u0435 \u0432\u0441\u0435\u0433\u043e \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432\u0435\u0442\u043a\u0438 6.13 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u043e\u0434\u043b\u0435\u043d\u043e \u043d\u0430 \u043d\u0435\u0434\u0435\u043b\u044e \u0438\u0437-\u0437\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441\u043e \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e \u0432 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f\u0445, \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0441\u043e\u0442\u0440\u0443\u0434\u043d\u0438\u043a\u043e\u043c Microsoft \u0438 \u043f\u0440\u0438\u043d\u044f\u0442\u044b\u0445 \u0432 \u0432\u0435\u0442\u043a\u0443 6.13 \u0432 \u043d\u043e\u044f\u0431\u0440\u0435. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043f\u0430\u0442\u0447, \u0441\u0442\u0430\u0432\u0448\u0438\u0439 \u043f\u0440\u0438\u0447\u0438\u043d\u043e\u0439 \u0441\u0431\u043e\u044f, \u0431\u044b\u043b \u043f\u043e\u0434\u0430\u043d \u043d\u0435\u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e — \u043d\u043e \u0431\u044b\u043b \u043f\u0440\u0438\u043d\u044f\u0442, \u0445\u043e\u0442\u044f \u043d\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u043b \u043d\u0438 […]<\/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-121343","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\udd47Um erro causado pelo c\u00f3digo de um funcion\u00e1rio da Microsoft foi identificado no kernel do Linux 6.13, que est\u00e1 prestes a ser lan\u00e7ado | ProHoster","description":"Linus Torvalds tinha a inten\u00e7\u00e3o de publicar a vers\u00e3o do n\u00facleo Linux 6.13 neste domingo, mas provavelmente os testes da vers\u00e3o 6.13 ser\u00e3o prolongados por uma semana devido a problemas de estabilidade nas mudan\u00e7as preparadas.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/v-gotovyashhemsya-v-relizu-yadre-linux-6-13-vyyavlen-sboj-vyzvannyj-kodom-sotrudnika-microsoft","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\u0412 \u0433\u043e\u0442\u043e\u0432\u044f\u0449\u0435\u043c\u0441\u044f \u0432 \u0440\u0435\u043b\u0438\u0437\u0443 \u044f\u0434\u0440\u0435 Linux 6.13 \u0432\u044b\u044f\u0432\u043b\u0435\u043d \u0441\u0431\u043e\u0439, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u043e\u0434\u043e\u043c \u0441\u043e\u0442\u0440\u0443\u0434\u043d\u0438\u043a\u0430 Microsoft | ProHoster","og:description":"\u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441 \u043d\u0430\u043c\u0435\u0440\u0435\u0432\u0430\u043b\u0441\u044f \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u0442\u044c \u0440\u0435\u043b\u0438\u0437 \u044f\u0434\u0440\u0430 Linux 6.13 \u0432 \u044d\u0442\u043e \u0432\u043e\u0441\u043a\u0440\u0435\u0441\u0435\u043d\u044c\u0435, \u043d\u043e \u0441\u043a\u043e\u0440\u0435\u0435 \u0432\u0441\u0435\u0433\u043e \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432\u0435\u0442\u043a\u0438 6.13 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u043e\u0434\u043b\u0435\u043d\u043e \u043d\u0430 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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"