{"id":153453,"date":"2026-01-08T11:11:55","date_gmt":"2026-01-08T09:11:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/analiz-ispravleniya-oshibok-v-yadre-linux-v-srednem-oshibki-zamechayut-cherez-2-goda"},"modified":"2026-01-08T11:11:55","modified_gmt":"2026-01-08T09:11:56","slug":"analiz-ispravleniya-oshibok-v-yadre-linux-v-srednem-oshibki-zamechayut-cherez-2-goda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/analiz-ispravleniya-oshibok-v-yadre-linux-v-srednem-oshibki-zamechayut-cherez-2-goda","title":{"rendered":"Anal\u00fdza oprav chyb v j\u00e1dru Linux \u2013 pr\u016fm\u011brn\u011b jsou chyby zaznamen\u00e1ny po 2 letech.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Byly zve\u0159ejn\u011bny v\u00fdsledky studie doby detekce a odstran\u011bn\u00ed chyb v j\u00e1d\u0159e Linux. Data byla z\u00edsk\u00e1na z anal\u00fdzy oprav 125 tis\u00edc chyb ozna\u010den\u00fdch v Git repozit\u00e1\u0159i tagem «Fixes:», kter\u00fd odkazuje na commit, v n\u011bm\u017e se vyskytla chyba. Pr\u016fm\u011brn\u00e1 doba detekce chyb v j\u00e1d\u0159e byla 2,1 roku. Pokud se zohledn\u00ed pouze chyby opraven\u00e9 v roce 2025, tato hodnota \u010dinila 2,8 roku. <\/p>\n

30 % chyb bylo opraveno t\u011bmi sam\u00fdmi v\u00fdvoj\u00e1\u0159i, kte\u0159\u00ed je tak\u00e9 zp\u016fsobily. 56,9 % chyb je odstran\u011bno b\u011bhem jednoho roku. 13,5 % chyb z\u016fstalo nezpozorov\u00e1no d\u00e9le ne\u017e 5 let (pokud bereme v \u00favahu pouze chyby opraven\u00e9 v roce 2025 \u2014 19,4 %). Vzhledem k nerovnom\u011brn\u00e9mu rozlo\u017een\u00ed \u010dinila medi\u00e1nov\u00e1 doba existence chyby v k\u00f3du j\u00e1dra 8 m\u011bs\u00edc\u016f pro vzorek ze roku 2005 a 1 rok pro chyby opraven\u00e9 v roce 2025. Nejl\u00e9pe udr\u017eovanou chybou v k\u00f3du se stalo p\u0159ete\u010den\u00ed vyrovn\u00e1vac\u00ed pam\u011bti v ethtool, kter\u00e9 bylo odstran\u011bno po 20,7 letech.

\"Anal\u00fdza<\/center> <\/p>\n

Dynamika detekce chyb se v\u00fdrazn\u011b li\u0161\u00ed od pr\u016fm\u011bru pro n\u011bkter\u00e9 podsyst\u00e9my, nap\u0159\u00edklad u ovlada\u010de sb\u011brnice CAN a z\u00e1sobn\u00edku SCTP trv\u00e1 odhalen\u00ed probl\u00e9m\u016f v pr\u016fm\u011bru p\u0159ibli\u017en\u011b 4 roky, u z\u00e1sobn\u00edku IPv4 \u2014 3,6 let, USB a TTY \u2014 3,5, Netfilter a s\u00ed\u0165ov\u00fd z\u00e1sobn\u00edk \u2014 2,9, VM \u2014 1,8, GPU \u2014 1,4, BPF \u2014 1,1 roku.

\"Anal\u00fdza<\/center> <\/p>\n

Doba detekce koreluje s typy chyb: pr\u016fm\u011brn\u00e1 doba detekce chyb souvisej\u00edc\u00edch s podm\u00ednkami z\u00e1vod\u016f \u010dinila 5,1 roku, celistvostn\u00ed p\u0159ete\u010den\u00ed \u2014 3,9, p\u0159\u00edstup po uvoln\u011bn\u00ed pam\u011bti \u2014 3,2, p\u0159ete\u010den\u00ed vyrovn\u00e1vac\u00ed pam\u011bti a \u00fanik pam\u011bti \u2014 3,1, po\u010d\u00edt\u00e1n\u00ed odkaz\u016f \u2014 2,8, dereferencov\u00e1n\u00ed nulov\u00e9ho ukazatele a vz\u00e1jemn\u00e9 blokov\u00e1n\u00ed \u2014 2,2 roku. <\/p>\n

Ve z\u00edskan\u00e9 statistice se tak\u00e9 odr\u00e1\u017e\u00ed vliv zaveden\u00ed nov\u00fdch n\u00e1stroj\u016f pro automatizovan\u00e9 vyhled\u00e1v\u00e1n\u00ed chyb, statickou anal\u00fdzu a testov\u00e1n\u00ed k\u00f3du, jako jsou Syzkaller, KASAN, KMSAN a KCSAN. Nap\u0159\u00edklad v roce 2010 nebyla zaznamen\u00e1na \u017e\u00e1dn\u00e1 oprava chyb nalezen\u00fdch b\u011bhem roku. Zat\u00edmco v roce 2014 bylo v pr\u016fb\u011bhu roku odhaleno 31 % chyb, v roce 2018 \u2014 54 %, a v roce 2022 \u2014 69 % chyb. <\/p>\n

Z\u00edskan\u00e1 statistika byla pou\u017eita k vytvo\u0159en\u00ed modelu strojov\u00e9ho u\u010den\u00ed VulnBERT, kter\u00fd umo\u017e\u0148uje p\u0159edpov\u00eddat p\u0159\u00edtomnost zranitelnost\u00ed v commitech. P\u0159i testov\u00e1n\u00ed na commitech z roku 2024 dos\u00e1hla p\u0159esnost detekce chyb 92,2 % p\u0159i \u00farovni fale\u0161n\u00fdch poplach\u016f 1,2 % (pro srovn\u00e1n\u00ed, d\u0159\u00edve dostupn\u00fd model CodeBERT identifikoval 89,2 % probl\u00e9m\u016f p\u0159i \u00farovni fale\u0161n\u00fdch poplach\u016f 48,1 %).
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043e\u0448\u0438\u0431\u043e\u043a \u0432 \u043a\u043e\u0434\u0435 \u044f\u0434\u0440\u0430 Linux. \u0414\u0430\u043d\u043d\u044b\u0435 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u044b \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f 125 \u0442\u044b\u0441\u044f\u0447 \u043e\u0448\u0438\u0431\u043e\u043a, \u043f\u043e\u043c\u0435\u0447\u0435\u043d\u043d\u044b\u0445 \u0432 Git-\u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u0442\u0435\u0433\u043e\u043c «Fixes:», \u0441\u0441\u044b\u043b\u0430\u044e\u0449\u0438\u043c\u0441\u044f \u043d\u0430 \u043a\u043e\u043c\u043c\u0438\u0442, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0432\u043e\u0437\u043d\u0438\u043a\u043b\u0430 \u043e\u0448\u0438\u0431\u043a\u0430. \u0421\u0440\u0435\u0434\u043d\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u043e\u0448\u0438\u0431\u043e\u043a \u0432 \u044f\u0434\u0440\u0435 \u0441\u043e\u0441\u0442\u0430\u0432\u0438\u043b\u043e 2.1 \u0433\u043e\u0434\u0430. \u0415\u0441\u043b\u0438 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u0448\u0438\u0431\u043a\u0438, \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u0432 2025 \u0433\u043e\u0434\u0443, \u0434\u0430\u043d\u043d\u044b\u0439 \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c \u0441\u043e\u0441\u0442\u0430\u0432\u0438\u043b 2.8 \u0433\u043e\u0434\u0430. […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":153454,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-153453","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Anal\u00fdza oprav chyb v j\u00e1d\u0159e Linux \u2014 pr\u016fm\u011brn\u011b jsou chyby zaznamen\u00e1ny po 2 letech | ProHoster","description":"Byly publikov\u00e1ny v\u00fdsledky v\u00fdzkumu \u010dasu detekce a odstran\u011bn\u00ed chyb v k\u00f3du j\u00e1dra 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