Greg Kroah-Hartman, responsabile del supporto della branch stabile del kernel Linux, ha deciso di vietare l'accettazione di modifiche al kernel Linux provenienti dall'Universit\u00e0 del Minnesota, e di annullare tutte le patch precedentemente accettate per una revisione. La ragione del blocco \u00e8 stata l'attivit\u00e0 di un gruppo di ricerca che studiava la possibilit\u00e0 di promuovere vulnerabilit\u00e0 nascoste nel codice dei progetti open source. Questo gruppo ha inviato patch contenenti vari tipi di errori, ha osservato le reazioni della comunit\u00e0 e ha studiato modi per ingannare il processo di revisione delle modifiche. Secondo Greg, esperimenti di questo tipo che mirano a introdurre modifiche dannose sono inaccettabili e non etici. <\/p>\n
\u041f\u043e\u0432\u043e\u0434\u043e\u043c \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438 \u043f\u043e\u0441\u043b\u0443\u0436\u0438\u043b\u0430 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0430 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u043e\u0439 \u0433\u0440\u0443\u043f\u043f\u044b \u043f\u0430\u0442\u0447\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u043b \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f \u0434\u043b\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0433\u043e \u0434\u0432\u043e\u0439\u043d\u043e\u0433\u043e \u0432\u044b\u0437\u043e\u0432\u0430 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 «free». \u0421 \u0443\u0447\u0451\u0442\u043e\u043c \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u0431\u044b\u043b\u0430 \u0431\u0435\u0441\u0441\u043c\u044b\u0441\u043b\u0435\u043d\u043d\u0430. \u0426\u0435\u043b\u044c\u044e \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 \u043f\u0430\u0442\u0447\u0430 \u0431\u044b\u043b\u043e \u0438\u0437\u0443\u0447\u0435\u043d\u0438\u0435 \u0442\u043e\u0433\u043e, \u043f\u0440\u043e\u0439\u0434\u0451\u0442 \u043b\u0438 \u043e\u0448\u0438\u0431\u043e\u0447\u043d\u043e\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0440\u0435\u0446\u0435\u043d\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 \u044f\u0434\u0440\u0430. \u041a\u0440\u043e\u043c\u0435 \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u043f\u0430\u0442\u0447\u0430 \u0432\u0441\u043f\u043b\u044b\u043b\u0438 \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u043f\u043e\u043f\u044b\u0442\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u0438\u0437 \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u041c\u0438\u043d\u043d\u0435\u0441\u043e\u0442\u044b \u0432\u043d\u0435\u0441\u0442\u0438 \u0441\u043e\u043c\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u044f\u0434\u0440\u043e, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u0441 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0441\u043a\u0440\u044b\u0442\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. <\/p>\n
Il partecipante che ha inviato le patch ha cercato di giustificarsi dicendo di testare un nuovo analizzatore statico e che la modifica era stata preparata sulla base dei risultati della sua analisi. Tuttavia, Greg ha sottolineato che le correzioni proposte non erano caratteristiche degli errori identificabili dagli analizzatori statici, e tutte le patch inviate non correggevano affatto nulla. Considerando che il gruppo di ricercatori in questione aveva gi\u00e0 cercato in passato di promuovere correzioni con vulnerabilit\u00e0 nascoste, \u00e8 evidente che hanno continuato i loro esperimenti sulla comunit\u00e0 degli sviluppatori del kernel. <\/p>\n
\u0418\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e, \u0447\u0442\u043e \u0432 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c \u043f\u0440\u043e\u0432\u043e\u0434\u044f\u0449\u0435\u0439 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u044b \u0433\u0440\u0443\u043f\u043f\u044b \u043f\u0440\u0438\u043d\u0438\u043c\u0430\u043b \u0443\u0447\u0430\u0441\u0442\u0438\u0435 \u0432 \u043b\u0435\u0433\u0438\u0442\u0438\u043c\u043d\u043e\u043c \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432\u044b\u044f\u0432\u0438\u043b \u0443\u0442\u0435\u0447\u043a\u0438 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0432 USB-\u0441\u0442\u0435\u043a\u0435 (CVE-2016-4482) \u0438 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 (CVE-2016-4485). \u0412 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0438 \u0441\u043a\u0440\u044b\u0442\u043e\u0433\u043e \u043f\u0440\u043e\u0434\u0432\u0438\u0436\u0435\u043d\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0433\u0440\u0443\u043f\u043f\u0430 \u0438\u0437 \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u041c\u0438\u043d\u043d\u0435\u0441\u043e\u0442\u044b \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043f\u0440\u0438\u043c\u0435\u0440 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 CVE-2019-12819, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u043e\u0439 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c, \u043f\u0440\u0438\u043d\u044f\u0442\u044b\u043c \u0432 \u044f\u0434\u0440\u043e \u0432 2014 \u0433\u043e\u0434\u0443. \u0418\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u043b\u043e \u0432 \u0431\u043b\u043e\u043a \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u0448\u0438\u0431\u043a\u0438 \u0432 mdio_bus \u0432\u044b\u0437\u043e\u0432 put_device, \u043d\u043e \u0441\u043f\u0443\u0441\u0442\u044f \u043f\u044f\u0442\u044c \u043b\u0435\u0442 \u0432\u0441\u043f\u043b\u044b\u043b\u043e, \u0447\u0442\u043e \u043f\u043e\u0434\u043e\u0431\u043d\u0430\u044f \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u044f \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u043a \u0431\u043b\u043e\u043a\u0443 \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u043e\u0441\u043b\u0435 \u0435\u0433\u043e \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f («use-after-free»). <\/p>\n
Inoltre, gli autori dello studio affermano che nel loro lavoro hanno generalizzato i dati su 138 patch che introducevano errori e non erano collegate ai partecipanti allo studio. I tentativi di invio di patch errate erano limitati alla corrispondenza via email, e tali modifiche non sono state incluse in Git (se dopo l'invio di una patch via email il maintainer considerava la patch normale, gli veniva chiesto di non includere la modifica perch\u00e9 conteneva un errore, dopo di che veniva inviata una patch corretta). <\/p>\n
Supplemento 1: A giudicare dall'attivit\u00e0 dell'autore della correzione criticata, ha gi\u00e0 inviato patch a vari sottosistemi del kernel da tempo. Ad esempio, nei driver radeon e nouveau sono state recentemente accettate modifiche con la chiamata pm_runtime_put_autosuspend(dev->dev) nel blocco di errore, ed \u00e8 probabile che ci\u00f2 porti all'uso di un buffer dopo il rilascio della memoria a esso associata. <\/p>\n
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[…]<\/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-99982","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\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\udd47L'Universit\u00e0 del Minnesota \u00e8 stata sospesa dallo sviluppo del kernel Linux per aver inviato patch discutibili | ProHoster","description":"Greg Kroah-Hartman, responsabile del supporto della branch stabile del kernel Linux, ha deciso di vietare l'accettazione di qualsiasi modifica nel kernel Linux proveniente dall'Universit\u00e0 del Minnesota, oltre a ripristinare tutte le 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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"