{"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\/de\/blog\/news\/v-yadre-linux-iz-tekstovoj-konsoli-udalili-podderzhku-prokrutki-teksta","title":{"rendered":"Im Linux-Kernel wurde die Unterst\u00fctzung f\u00fcr das Scrollen von Text in der Textkonsole entfernt.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>In der im Kern von Linux implementierten Textkonsole <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=973c096f6a85e5b5f2a295126ba6928d9a6afd45\">wurde der Code<\/a><\/noindex>, die die M\u00f6glichkeit bietet, den Text nach hinten zu scrollen (CONFIG_VGACON_SOFT_SCROLLBACK). Der Code wurde aufgrund von Fehlern entfernt, die nicht behoben werden konnten, da es keinen Ansprechpartner gibt, der die Entwicklung von vgacon \u00fcberwacht.<\/p>\n<p>Im Sommer wurde in vgacon eine <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=ebfdfeeae8c0\">behoben<\/a><\/noindex> Schwachstelle (CVE-2020-14331) entdeckt, die aufgrund unzureichender \u00dcberpr\u00fcfungen des verf\u00fcgbaren Speichers im Scrollpuffer zu einem Puffer\u00fcberlauf f\u00fchren kann. Die Schwachstelle weckte das Interesse der Entwickler, die ein Fuzzing-Testing des Codes von vgacon organisiert haben in <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/syzkaller\/blob\/master\/docs\/syzbot.md\">syzbot<\/a><\/noindex>.<\/p>\n<p>Zus\u00e4tzliche \u00dcberpr\u00fcfungen erbrachten noch einige \u00e4hnliche Probleme im Code von vgacon sowie Probleme in der Softwareimplementierung des Scrollens im fbcon-Treiber. Leider bleibt der problematische Code seit langem ohne Betreuung, vermutlich weil die Entwickler auf grafische Konsolen umgestiegen sind und Textkonsolen aus der Mode gekommen sind (Menschen nutzen weiterhin die Konsolen von vgacon und fbcon, aber sie sind seit Jahrzehnten nicht mehr das Hauptinterface des Kernels, und solche erweiterten Funktionen wie das im Treiber integrierte Scrollen (Shift+PageUp\/PageDown) werden vermutlich kaum nachgefragt). <\/p>\n<p>In diesem Zusammenhang hat Linus Torvalds beschlossen, den ungenutzten Code nicht weiter zu betreuen, sondern ihn einfach zu entfernen. Sollten Nutzer gefunden werden, f\u00fcr die diese Funktionalit\u00e4t erforderlich ist, wird der Code zur Unterst\u00fctzung des Scrollens in der Konsole ins Kernel zur\u00fcckgef\u00fchrt, sobald ein Ansprechpartner gefunden wird, der bereit ist, die Betreuung zu \u00fcbernehmen.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Quelle: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53714\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u0437 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u0439 \u0432 \u0441\u043e\u0441\u0442\u0430\u0432\u0435 \u044f\u0434\u0440\u0430 Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u043e\u0439 \u043a\u043e\u043d\u0441\u043e\u043b\u0438 \u0443\u0434\u0430\u043b\u0451\u043d \u043a\u043e\u0434, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u043a\u0440\u0443\u0442\u043a\u0438 \u0442\u0435\u043a\u0441\u0442\u0430 \u043d\u0430\u0437\u0430\u0434 (CONFIG_VGACON_SOFT_SCROLLBACK). \u041a\u043e\u0434 \u0443\u0434\u0430\u043b\u0451\u043d \u0432 \u0441\u0432\u044f\u0437\u0438 \u0441 \u043d\u0430\u043b\u0438\u0447\u0438\u0435\u043c \u043e\u0448\u0438\u0431\u043e\u043a, \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043e\u043a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u043d\u0435\u043a\u043e\u043c\u0443 \u0443\u0441\u0442\u0440\u0430\u043d\u0438\u0442\u044c \u0438\u0437-\u0437\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043c\u044d\u0439\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430, \u043a\u0443\u0440\u0438\u0440\u0443\u044e\u0449\u0435\u0433\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0443 vgacon. \u041b\u0435\u0442\u043e\u043c \u0432 vgacon \u0431\u044b\u043b\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-14331), \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u0430\u044f \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0431\u0443\u0444\u0435\u0440\u0430 \u0438\u0437-\u0437\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u0434\u043e\u043b\u0436\u043d\u044b\u0445 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 [&hellip;]<\/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-94301","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0418\u0437 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u0439 \u0432 \u0441\u043e\u0441\u0442\u0430\u0432\u0435 \u044f\u0434\u0440\u0430 Linux \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u043e\u0439 \u043a\u043e\u043d\u0441\u043e\u043b\u0438\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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