{"id":94301,"date":"2020-09-15T13:42:05","date_gmt":"2020-09-15T11:42:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-linux-iz-tekstovoj-konsoli-udalili-podderzhku-prokrutki-teksta"},"modified":"2020-09-15T13:42:05","modified_gmt":"2020-09-15T11:42:05","slug":"v-yadre-linux-iz-tekstovoj-konsoli-udalili-podderzhku-prokrutki-teksta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-yadre-linux-iz-tekstovoj-konsoli-udalili-podderzhku-prokrutki-teksta","title":{"rendered":"Ve j\u00e1dru Linux z textov\u00e9 konzole byla odstran\u011bna podpora pro posouv\u00e1n\u00ed textu.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Z dod\u00e1van\u00e9 implementace textov\u00e9 konzole v j\u00e1d\u0159e Linuxu byl odstran\u011bn k\u00f3d<\/a><\/noindex>, kter\u00e1 umo\u017e\u0148uje zp\u011btn\u00e9 rolov\u00e1n\u00ed textu (CONFIG_VGACON_SOFT_SCROLLBACK). K\u00f3d byl odstran\u011bn kv\u016fli chyb\u00e1m, kter\u00e9 nikdo nem\u011bl \u010das opravit, proto\u017ee chyb\u011bl spr\u00e1vce dohledu nad v\u00fdvojem vgacon.<\/p>\n

V l\u00e9t\u011b byla v vgacon odhalena a odstran\u011bna<\/a><\/noindex> zranitelnost (CVE-2020-14331), kter\u00e1 mohla v\u00e9st k p\u0159ete\u010den\u00ed vyrovn\u00e1vac\u00ed pam\u011bti kv\u016fli nedostate\u010dn\u00fdm kontrol\u00e1m dostupnosti pam\u011bti v rolovac\u00ed vyrovn\u00e1vac\u00ed pam\u011bti. Zranitelnost upoutala pozornost v\u00fdvoj\u00e1\u0159\u016f, kte\u0159\u00ed zah\u00e1jili fuzzingov\u00e9 testov\u00e1n\u00ed k\u00f3du vgacon v syzbot<\/a><\/noindex>.<\/p>\n

Dopl\u0148kov\u00e9 kontroly odhalily dal\u0161\u00ed podobn\u00e9 probl\u00e9my v k\u00f3du vgacon, stejn\u011b jako probl\u00e9my v softwarov\u00e9 implementaci rolov\u00e1n\u00ed v ovlada\u010di fbcon. Bohu\u017eel, probl\u00e9mov\u00fd k\u00f3d dlouho z\u016fstal bez \u00fadr\u017eby, pravd\u011bpodobn\u011b proto, \u017ee v\u00fdvoj\u00e1\u0159i p\u0159e\u0161li na pou\u017eit\u00ed grafick\u00fdch konzol\u00ed a textov\u00e9 konzole vy\u0161ly z ob\u011bhu (lid\u00e9 st\u00e1le pou\u017e\u00edvaj\u00ed konzole vgacon a fbcon, ale u\u017e n\u011bkolik desetilet\u00ed nejsou hlavn\u00edm u\u017eivatelsk\u00fdm rozhran\u00edm j\u00e1dra a takov\u00e9 pokro\u010dil\u00e9 funkce, jako je rolov\u00e1n\u00ed zabudovan\u00e9 do ovlada\u010de (Shift+PageUp\/PageDown), jsou pravd\u011bpodobn\u011b m\u00e1lo popt\u00e1van\u00e9). <\/p>\n

Z tohoto d\u016fvodu se Linus Torvalds rozhodl nesna\u017eit se udr\u017eovat nepou\u017e\u00edvan\u00fd k\u00f3d, ale jednodu\u0161e ho odstranit. Pokud se najdou u\u017eivatel\u00e9, pro kter\u00e9 bude tato funkcionalita nezbytn\u00e1, k\u00f3d pro podporu rolov\u00e1n\u00ed v konzoli bude vr\u00e1cen do j\u00e1dra, jakmile se najde spr\u00e1vce, kter\u00fd se ujme jeho \u00fadr\u017eby.<\/p>\n

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

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

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