A Fedora Linux fejleszt\u0151i tiszt\u00e1zt\u00e1k a j\u00fanius v\u00e9g\u00e9n lej\u00e1r\u00f3 Microsoft tan\u00fas\u00edtv\u00e1ny k\u00f6r\u00fcli helyzetet, amelyet a Shim r\u00e9teg digit\u00e1lis al\u00e1\u00edr\u00e1s\u00e1nak hiteles\u00edt\u00e9s\u00e9re haszn\u00e1lnak, amely a Linux disztrib\u00faci\u00f3k UEFI Secure Boot m\u00f3dban t\u00f6rt\u00e9n\u0151 ellen\u0151rz\u00f6tt ind\u00edt\u00e1s\u00e1hoz sz\u00fcks\u00e9ges. Az \u00faj tan\u00fas\u00edtv\u00e1nyra val\u00f3 \u00e1tt\u00e9r\u00e9snek \u00e9szrev\u00e9tlen\u00fcl kell zajlania a felhaszn\u00e1l\u00f3k sz\u00e1m\u00e1ra, mivel a tan\u00fas\u00edtv\u00e1ny \u00e9lettartam\u00e1nak lej\u00e1rta csup\u00e1n annyit jelent, hogy \u00faj al\u00e1\u00edr\u00e1sokat nem lehet l\u00e9trehozni. Az UEFI Secure Boot ind\u00edt\u00e1sakor a tan\u00fas\u00edtv\u00e1ny \u00e9rv\u00e9nyess\u00e9g\u00e9t nem ellen\u0151rzik, \u00e9s csak a kompromitt\u00e1lt tan\u00fas\u00edtv\u00e1nyok visszavon\u00e1sa sz\u00e1m\u00edt. <\/p>\n
A megl\u00e9v\u0151 rendszerek, friss\u00edt\u00e9s n\u00e9lk\u00fcl a shim telep\u00edt\u00e9s\u00e9hez, tov\u00e1bbra is elindulnak, am\u00edg a tan\u00fas\u00edtv\u00e1ny nyilv\u00e1nos kulcs\u00e1t el nem t\u00e1vol\u00edtj\u00e1k a firmware-b\u0151l, vagy a tan\u00fas\u00edtv\u00e1nyokat UEFI (DBX) visszavont list\u00e1j\u00e1ba nem helyezik. A Microsoft kulcs\u00e1val csak a shim ind\u00edt\u00f3 r\u00e9teg van hiteles\u00edtve, amelyben a nyilv\u00e1nos kulcs van, amely a bet\u00f6lt\u00f6tt komponensek hiteles\u00edt\u00e9s\u00e9re szolg\u00e1l, mint p\u00e9ld\u00e1ul a GRUB2 ind\u00edt\u00f3, a Linux kernel, a kernel modulok \u00e9s a bet\u00f6lt\u00e9s sor\u00e1n haszn\u00e1lt folyamatok, mint a fwupd. Ez a megk\u00f6zel\u00edt\u00e9s lehet\u0151v\u00e9 teszi, hogy a Microsoft csak a shim r\u00e9tegben bek\u00f6vetkezett v\u00e1ltoz\u00e1sokat hiteles\u00edtse, \u00e9s saj\u00e1t maguk biztos\u00edts\u00e1k a disztrib\u00faci\u00f3 bet\u00f6lt\u00e9si folyamat\u00e1nak ellen\u0151rz\u00e9s\u00e9t.<\/p>\n
A Microsoft tan\u00fas\u00edtv\u00e1nya, amely a harmadik f\u00e9lt\u0151l sz\u00e1rmaz\u00f3 firmware-eket hiteles\u00edti az UEFI Secure Boot sz\u00e1m\u00e1ra, 2011 \u00f3ta \u00e9rv\u00e9nyes. 2023-ban \u00faj tan\u00fas\u00edtv\u00e1nyt gener\u00e1ltak, amelyet 2025 okt\u00f3ber\u00e9t\u0151l haszn\u00e1lnak az al\u00e1\u00edr\u00e1sok l\u00e9trehoz\u00e1s\u00e1hoz. A Fedora Rawhide rep\u00f3ban, amely a Fedora 45 kiad\u00e1s\u00e1nak alapj\u00e1t k\u00e9pezi, m\u00e1r hozz\u00e1adt\u00e1k a friss\u00edtett shim r\u00e9teget, amelyet t\u00f6bb kulcs hiteles\u00edt, biztos\u00edtva a maxim\u00e1lis kompatibilit\u00e1st a hardverrel (haszn\u00e1lhat\u00f3 r\u00e9gi firmware-ekn\u00e9l, ahol az \u00faj tan\u00fas\u00edtv\u00e1ny nyilv\u00e1nos kulcsa nincs jelen, valamint a r\u00e9gi tan\u00fas\u00edtv\u00e1ny nyilv\u00e1nos kulcs\u00e1val nem rendelkez\u0151 firmware-ekn\u00e9l is).<\/p>\n
B\u00e1r a Microsoft tan\u00fas\u00edtv\u00e1ny\u00e1nak lej\u00e1rata nem kell, hogy befoly\u00e1solja a rendszerind\u00edt\u00e1si funkcionalit\u00e1st, a Fedora fejleszt\u0151i azt aj\u00e1nlj\u00e1k, hogy a felhaszn\u00e1l\u00f3k friss\u00edts\u00e9k az Secure Boot kulcsainak adatb\u00e1zis\u00e1t, amikor \u00faj firmware verzi\u00f3k jelennek meg az eszk\u00f6zeikhez. A rendszer UEFI Secure Boot m\u00f3dban t\u00f6rt\u00e9n\u0151 ind\u00edt\u00e1s\u00e1nak ellen\u0151rz\u00e9s\u00e9re haszn\u00e1lhat\u00f3 a «mokutil —sb-state» parancs, m\u00edg a firmware-ben el\u00e9rhet\u0151 nyilv\u00e1nos kulcsok list\u00e1j\u00e1nak megjelen\u00edt\u00e9s\u00e9re a «mokutil —db —short» parancsot lehet haszn\u00e1lni. A shim r\u00e9tegr\u0151l al\u00e1\u00edrt kulcsok megtekint\u00e9s\u00e9hez a «sudo pesign -S -i \/boot\/efi\/EFI\/fedora\/shimx64.efi» parancsot kell futtatni, miut\u00e1n telep\u00edtett\u00e9k a pesign csomagot. A firmware friss\u00edt\u00e9s\u00e9nek ellen\u0151rz\u00e9s\u00e9re \u00e9s telep\u00edt\u00e9s\u00e9re a «sudo fwupdmgr update» parancs futtathat\u00f3. <\/p>\n
A k\u00f6vetkez\u0151 shim r\u00e9teg verzi\u00f3t kiz\u00e1r\u00f3lag \u00faj Microsoft tan\u00fas\u00edtv\u00e1nnyal fogj\u00e1k hiteles\u00edteni, \u00e9s a firmware friss\u00edt\u00e9se sz\u00fcks\u00e9ges a rendszereik felk\u00e9sz\u00edt\u00e9s\u00e9hez erre a v\u00e1ltoz\u00e1sra. A shim friss\u00edt\u00e9se a sebezhet\u0151s\u00e9gek \u00e9s s\u00falyos hib\u00e1k felfedez\u00e9se eset\u00e9n fog megjelenni, ami el\u0151fordulhat ak\u00e1r egy h\u00f3napon bel\u00fcl, ak\u00e1r egy \u00e9ven bel\u00fcl. A shim l\u00e9tez\u00e9se sor\u00e1n kritikus sebezhet\u0151s\u00e9geket tal\u00e1ltak, mik\u00f6zben az utols\u00f3 biztons\u00e1gi probl\u00e9m\u00e1kr\u00f3l sz\u00f3l\u00f3 jelent\u00e9st mind\u00f6ssze n\u00e9h\u00e1ny nappal ezel\u0151tt adt\u00e1k ki. <\/p>\n
A jelent\u00e9sben k\u00e9t nemr\u00e9g felfedezett sebezhet\u0151s\u00e9g szerepel: CVE-2026-8863 \u00e9s \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Fedora Linux \u043f\u0440\u043e\u044f\u0441\u043d\u0438\u043b\u0438 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044e, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u0438\u0441\u0442\u0435\u0447\u0435\u043d\u0438\u0435\u043c \u0432 \u043a\u043e\u043d\u0446\u0435 \u0438\u044e\u043d\u044f \u0441\u0440\u043e\u043a\u0430 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u0430 Microsoft, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u0437\u0430\u0432\u0435\u0440\u0435\u043d\u0438\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u043f\u043e\u0434\u043f\u0438\u0441\u044c\u044e \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438 Shim, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0432\u0435\u0440\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u043e\u0432 Linux \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 UEFI Secure Boot. \u041f\u0435\u0440\u0435\u0445\u043e\u0434 \u043d\u0430 \u043d\u043e\u0432\u044b\u0439 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442 \u0434\u043e\u043b\u0436\u0435\u043d \u043f\u0440\u043e\u0439\u0442\u0438 \u043d\u0435\u0437\u0430\u043c\u0435\u0442\u043d\u043e \u0434\u043b\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0442\u0430\u043a \u043a\u0430\u043a \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u0435 \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0436\u0438\u0437\u043d\u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u0430 \u043f\u0440\u0438\u0432\u0435\u0434\u0451\u0442 \u043b\u0438\u0448\u044c \u043a \u043d\u0435\u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0435\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182058","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\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\udd47A tan\u00fas\u00edtv\u00e1ny \u00e9lettartama lej\u00e1r a bootloader sz\u00e1m\u00e1ra, amely UEFI Secure Boot-t haszn\u00e1l a Linux disztrib\u00faci\u00f3kban | ProHoster","description":"A Fedora Linux fejleszt\u0151i tiszt\u00e1zt\u00e1k a Microsoft tan\u00fas\u00edtv\u00e1ny\u00e1nak lej\u00e1rat\u00e1val kapcsolatos helyzetet, amely j\u00fanius v\u00e9g\u00e9n j\u00e1r le, \u00e9s amelyet a Shim r\u00e9teg digit\u00e1lis al\u00e1\u00edr\u00e1s\u00e1nak hiteles\u00edt\u00e9s\u00e9re haszn\u00e1lnak.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/istekaet-vremya-zhizni-sertifikata-kotorym-zaveren-zagruzchik-dlya-uefi-secure-boot-v-distributivah-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0418\u0441\u0442\u0435\u043a\u0430\u0435\u0442 \u0432\u0440\u0435\u043c\u044f \u0436\u0438\u0437\u043d\u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u0437\u0430\u0432\u0435\u0440\u0435\u043d \u0437\u0430\u0433\u0440\u0443\u0437\u0447\u0438\u043a \u0434\u043b\u044f UEFI Secure Boot \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 Linux | ProHoster","og:description":"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Fedora Linux \u043f\u0440\u043e\u044f\u0441\u043d\u0438\u043b\u0438 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044e, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u0438\u0441\u0442\u0435\u0447\u0435\u043d\u0438\u0435\u043c \u0432 \u043a\u043e\u043d\u0446\u0435 \u0438\u044e\u043d\u044f \u0441\u0440\u043e\u043a\u0430 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u0430 Microsoft, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u0437\u0430\u0432\u0435\u0440\u0435\u043d\u0438\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u043f\u043e\u0434\u043f\u0438\u0441\u044c\u044e \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438 Shim, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0432\u0435\u0440\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/istekaet-vremya-zhizni-sertifikata-kotorym-zaveren-zagruzchik-dlya-uefi-secure-boot-v-distributivah-linux","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-06-14T12:48:27+00:00","article:modified_time":"2026-06-14T12:48:27+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"182058","title":null,"description":null,"keywords":null,"keyphrases":{"focus":[],"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-08-05 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\nCVE-2026-10797, amelyek lehet\u0151v\u00e9 teszik, hogy a k\u00f3dja a bet\u00f6lt\u00e9s korai szakasz\u00e1ban v\u00e9grehajt\u00f3djon, miel\u0151tt a vez\u00e9rl\u00e9st \u00e1tny\u00fajtan\u00e1k az oper\u00e1ci\u00f3s rendszernek, megker\u00fclj\u00e9k az UEFI Secure Boot v\u00e9delm\u00e9t, \u00e9s nem hiteles\u00edtett digit\u00e1lis al\u00e1\u00edr\u00e1ssal rendelkez\u0151 kernel komponensek bet\u00f6lt\u00e9s\u00e9t val\u00f3s\u00edts\u00e1k meg. A probl\u00e9m\u00e1k a shim 0.9 verzi\u00f3j\u00e1ig tart\u00f3 verzi\u00f3it \u00e9rintik, amelyek 2016 el\u0151tt k\u00e9sz\u00fcltek. A t\u00e1mad\u00e1snak kitett rendszerek k\u00f6z\u00e9 tartozik
\n RedHat Enterprise Linux 7.2, CentOS 7.2, Oracle Linux 7.2, ROSA Linux R10\/R9 \u00e9s openSUSE shim 0.9-szel. A shim r\u00e9tegek 0.9 verzi\u00f3ja \u00e9s az alatta l\u00e9v\u0151k hozz\u00e1 lettek adva a visszavont digit\u00e1lis al\u00e1\u00edr\u00e1sok adatb\u00e1zis\u00e1hoz (DBX - UEFI Forbidden Signature Database), \u00e9s a DBX friss\u00edt\u00e9se eset\u00e9n a rendszer nem haszn\u00e1lhat\u00f3 UEFI Secure Boot \u00fczemm\u00f3dban val\u00f3 bet\u00f6lt\u00e9shez.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"