{"id":182443,"date":"2026-07-02T22:53:28","date_gmt":"2026-07-02T20:53:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/problemy-s-ochistkoj-klyuchej-shifrovaniya-diska-iz-ozu-pri-perehode-linux-v-zhdushhij-rezhim"},"modified":"2026-07-02T22:53:28","modified_gmt":"2026-07-02T20:53:29","slug":"problemy-s-ochistkoj-klyuchej-shifrovaniya-diska-iz-ozu-pri-perehode-linux-v-zhdushhij-rezhim","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/problemy-s-ochistkoj-klyuchej-shifrovaniya-diska-iz-ozu-pri-perehode-linux-v-zhdushhij-rezhim","title":{"rendered":"Probleme cu \u0219tergerea cheilor de criptare a discului din RAM la trecerea Linux \u00een modul de a\u0219teptare","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen timpul portabilit\u0103\u021bii instrumentului cryptsetup-suspend pentru NixOS, a fost identificat\u0103 o eroare \u00een subsistemul de criptare a discurilor LUKS (Linux Unified Key Setup), care, \u00eencep\u00e2nd cu kernelul Linux 6.9 (commit-ul problematic), lansat \u00een mai 2024, a oprit \u0219tergerea cheilor de criptare din memoria opera\u021bional\u0103 la trecerea sistemului \u00een modul de a\u0219teptare. <\/p>\n

Instrumentul cryptsetup-suspend este utilizat \u00een Debian pentru blocarea automat\u0103 a partiti\u021biilor LUKS \u00eenainte de a intra \u00een modul de somn. Se presupune c\u0103, \u00een caz de furt al laptopului, care a fost pus \u00een modul de somn, atacatorul nu va putea ob\u021bine acces la date, deoarece la ie\u0219irea din somn va fi necesar\u0103 introducerea parolei pentru a restabili accesul la datele criptate. Din cauza unei erori \u00een nucleul Linux, dup\u0103 blocarea partiti\u021biei LUKS cu comanda \u00abcryptsetup luksSuspend\u00bb, cheile nu erau \u0219terse din memoria RAM \u0219i r\u0103m\u00e2neau vizibile prin \/proc\/keys, permi\u021b\u00e2nd atacatorului s\u0103 le extrag\u0103, de exemplu, prin metoda \u201erebooting cold\u201d \u0219i s\u0103 le foloseasc\u0103 pentru a accesa datele. <\/p>\n

Lipsa \u0219tergerii cheilor a fost identificat\u0103 \u00een timpul depan\u0103rii st\u0103rii de condi\u021bionare, care a dus la probleme la trecerea \u00een modul de a\u0219teptare. Eroarea a ap\u0103rut dup\u0103 ce s-a realizat o refactorizare \u00een kernelul 6.9, iar cheile erau legate de firul de apel \u0219i ar fi trebuit s\u0103 fie \u0219terse la finalizarea acestuia, dar \u00een realitate r\u0103m\u00e2neau \u00een memorie. Pentru a corecta acest lucru, a fost propus un patch pe o linie care elimin\u0103 eroarea comis\u0103 \u00een kernelul Linux. <\/p>\n

Aceast\u0103 patch nu a fost acceptat\u0103 \u00een nucleu, deoarece a fost identificat\u0103 o deficien\u021b\u0103 \u2014 patch-ul func\u021bioneaz\u0103 doar pentru unit\u0103\u021bi fizice, dar nu func\u021bioneaz\u0103 pentru dispozitive virtuale de tip loop. \u00cen loc s\u0103 corecteze problema la nivelul nucleului, dezvoltatorii instrumentului cryptsetup au propus o solu\u021bie alternativ\u0103 pentru cur\u0103\u021barea cheilor. Aceast\u0103 modificare a fost deja acceptat\u0103 \u0219i va fi inclus\u0103 \u00een versiunea cryptsetup 2.8.7. <\/p>\n

\u00cen plus, pentru NixOS a fost creat\u0103 o implementare proprie a scripturilor pentru blocarea discurilor criptate \u00eenainte de trecerea \u00een modul de a\u0219teptare, care utilizeaz\u0103 un vechi patch pentru kernel, care nu a fost acceptat \u00een 2015, care \u0219terge for\u021bat cheile din memorie \u00eenainte de trecerea \u00een modul de repaus.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0445\u043e\u0434\u0435 \u043f\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u043b\u044f NixOS \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f cryptsetup-suspend \u0431\u044b\u043b\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043e\u0448\u0438\u0431\u043a\u0430 \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0434\u0438\u0441\u043a\u043e\u0432\u043e\u0433\u043e \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f LUKS (Linux Unified Key Setup), \u0438\u0437-\u0437\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 Linux 6.9 (\u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0439 \u043a\u043e\u043c\u043c\u0438\u0442), \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u043e\u0433\u043e \u0432 \u043c\u0430\u0435 2024 \u0433\u043e\u0434\u0430, \u043f\u0435\u0440\u0435\u0441\u0442\u0430\u043b\u0430 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u043e\u0447\u0438\u0441\u0442\u043a\u0430 \u043a\u043b\u044e\u0447\u0435\u0439 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0432 \u0436\u0434\u0443\u0449\u0438\u0439 \u0440\u0435\u0436\u0438\u043c. \u0418\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 cryptsetup-suspend \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 Debian \u0434\u043b\u044f \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182443","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\n","aioseo_head_json":{"title":"\ud83e\udd47Probleme cu cur\u0103\u021barea cheilor de criptare a discului din RAM \u00een timpul trecerii Linux \u00een modul de a\u0219teptare | ProHoster","description":"\u00cen timpul port\u0103rii instrumentului cryptsetup-suspend pentru NixOS, a fost descoperit\u0103 o eroare \u00een subsistemul de criptare a discului LUKS (Linux Unified Key Setup), din cauza c\u0103reia, \u00eencep\u00e2nd cu kernelul Linux 6.9 (commit 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