{"id":1874,"date":"2019-10-01T14:33:14","date_gmt":"2019-10-01T04:33:14","guid":{"rendered":"https:\/\/blog.n-kraft.ru\/?p=1874"},"modified":"2019-10-02T15:46:41","modified_gmt":"2019-10-02T05:46:41","slug":"linux-5-4-%d0%bf%d0%be%d0%bb%d1%83%d1%87%d0%b8%d1%82-%d1%84%d1%83%d0%bd%d0%ba%d1%86%d0%b8%d1%8e-%d0%b1%d0%bb%d0%be%d0%ba%d0%b8%d1%80%d0%be%d0%b2%d0%ba%d0%b8-%d0%b4%d0%be%d1%81%d1%82%d1%83%d0%bf%d0%b0","status":"publish","type":"post","link":"https:\/\/blog.n-kraft.ru\/?p=1874","title":{"rendered":"Linux 5.4 \u043f\u043e\u043b\u0443\u0447\u0438\u0442 \u0444\u0443\u043d\u043a\u0446\u0438\u044e \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u044f\u0434\u0440\u0443 \u0434\u043b\u044f \u0441\u0443\u043f\u0435\u0440\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f"},"content":{"rendered":"<p>\u0412 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u043c \u0440\u0435\u043b\u0438\u0437\u0435 \u044f\u0434\u0440\u0430 Linux 5.4 \u0431\u0443\u0434\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 lockdown, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0430\u0442 \u0434\u043e\u0441\u0442\u0443\u043f \u0441\u0443\u043f\u0435\u0440\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u043a \u044f\u0434\u0440\u0443. \u0424\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b lockdown \u0431\u044b\u043b \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u0432 LSM-\u043c\u043e\u0434\u0443\u043b\u044c (Linux Security Module), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0440\u0430\u0437\u0434\u0435\u043b\u044f\u0435\u0442 UID 0 \u0438 \u044f\u0434\u0440\u043e, \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044f \u0442\u0435\u043c \u0441\u0430\u043c\u044b\u043c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u0443\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043d\u0438\u0436\u043d\u0435\u0433\u043e \u0443\u0440\u043e\u0432\u043d\u044f. <!--more--><\/p>\n<p>&nbsp;<\/p>\n<p>\u0417\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a, \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b\u0439 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0441 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438 \u0441\u0443\u043f\u0435\u0440\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u043c\u043e\u0436\u0435\u0442 \u0442\u0430\u043a\u0436\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430. \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0435\u043c\u0443 \u043d\u0443\u0436\u043d\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e kexec \u0437\u0430\u043c\u0435\u043d\u0438\u0442\u044c \u044f\u0434\u0440\u043e \u0438\u043b\u0438 \u0447\u0435\u0440\u0435\u0437 \/dev\/kmem \u0447\u0438\u0442\u0430\u0442\u044c\/\u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u043f\u0430\u043c\u044f\u0442\u0438. \u0411\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u044d\u0442\u043e\u043c\u0443 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u0441\u043c\u043e\u0436\u0435\u0442 \u043e\u0431\u043e\u0439\u0442\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b UEFI Secure Boot \u0438\u043b\u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0445\u0440\u0430\u043d\u044f\u0449\u0438\u043c\u0441\u044f \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430 \u0434\u0430\u043d\u043d\u044b\u043c.<\/p>\n<p>&nbsp;<\/p>\n<p>\u0420\u0435\u0436\u0438\u043c lockdown \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u0435\u0442 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \/dev\/mem, \/dev\/kmem, \/dev\/port, \/proc\/kcore, debugfs, \u043e\u0442\u043b\u0430\u0434\u043e\u0447\u043d\u043e\u043c\u0443 \u0440\u0435\u0436\u0438\u043c\u0443 kprobes, mmiotrace, tracefs, BPF, PCMCIA CIS (Card Information Structure), \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430\u043c ACPI \u0438 MSR-\u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0430\u043c \u0426\u041f. \u041e\u043d \u0442\u0430\u043a\u0436\u0435 \u0431\u043b\u043e\u043a\u0438\u0440\u0443\u0435\u0442 \u0432\u044b\u0437\u043e\u0432\u044b kexec_file \u0438 kexec_load \u0438 \u043f\u0435\u0440\u0435\u0445\u043e\u0434 \u0432 \u0441\u043f\u044f\u0449\u0438\u0439 \u0440\u0435\u0436\u0438\u043c, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 DMA \u0434\u043b\u044f PCI-\u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432. \u041a\u0440\u043e\u043c\u0435 \u0442\u043e\u0433\u043e, lockdown \u0437\u0430\u043f\u0440\u0435\u0449\u0430\u0435\u0442 \u0438\u043c\u043f\u043e\u0440\u0442 \u043a\u043e\u0434\u0430 ACPI \u0438\u0437 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 EFI \u0438 \u043d\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0441 \u043f\u043e\u0440\u0442\u0430\u043c\u0438 \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430.<\/p>\n<p>&nbsp;<\/p>\n<p>\u0420\u0435\u0436\u0438\u043c lockdown \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0435\u0434\u0443\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u043d\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 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\u043d\u0443\u0436\u043d\u043e \u0443\u043a\u0430\u0437\u0430\u0442\u044c \u0432 kconfig \u043e\u043f\u0446\u0438\u044e SECURITY_LOCKDOWN_LSM, \u0430 \u0434\u043b\u044f \u0430\u043a\u0442\u0438\u0432\u0430\u0446\u0438\u0438 \u2013 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 \u044f\u0434\u0440\u0430 &#171;lockdown=&#187;, \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u0444\u0430\u0439\u043b &#171;\/sys\/kernel\/security\/lockdown&#187; \u0438\u043b\u0438 \u0441\u0431\u043e\u0440\u043e\u0447\u043d\u044b\u0435 \u043e\u043f\u0446\u0438\u0438 LOCK_DOWN_KERNEL_FORCE_*.<\/p>\n<p>&nbsp;<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>\u0412 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u043c \u0440\u0435\u043b\u0438\u0437\u0435 \u044f\u0434\u0440\u0430 Linux 5.4 \u0431\u0443\u0434\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 lockdown, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0430\u0442 \u0434\u043e\u0441\u0442\u0443\u043f \u0441\u0443\u043f\u0435\u0440\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u043a \u044f\u0434\u0440\u0443. \u0424\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b lockdown \u0431\u044b\u043b \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u0432 LSM-\u043c\u043e\u0434\u0443\u043b\u044c (Linux Security Module), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0440\u0430\u0437\u0434\u0435\u043b\u044f\u0435\u0442 UID 0 \u0438 \u044f\u0434\u0440\u043e, \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044f \u0442\u0435\u043c \u0441\u0430\u043c\u044b\u043c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u0443\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043d\u0438\u0436\u043d\u0435\u0433\u043e \u0443\u0440\u043e\u0432\u043d\u044f.<!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt 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