{"id":142366,"date":"2025-09-05T11:11:57","date_gmt":"2025-09-05T09:11:57","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-lkrg-1-0-0-dlya-zashhity-ot-ekspluataczii-uyazvimostej-v-yadre-linux"},"modified":"2026-01-24T17:56:45","modified_gmt":"2026-01-24T15:56:45","slug":"vypusk-lkrg-1-0-0-dlya-zashhity-ot-ekspluataczii-uyazvimostej-v-yadre-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypusk-lkrg-1-0-0-dlya-zashhity-ot-ekspluataczii-uyazvimostej-v-yadre-linux","title":{"rendered":"LKRG 1.0.0 v\u00e4ljaanne Linuxi tuuma haavatavuste \u00e4rahoidmiseks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Openwall projekti avaldas LKRG 1.0.0 (Linux Kernel Runtime Guard) tuuma mooduli, mis on m\u00f5eldud tuuma struktuuride terviklikkuse kontrollimiseks ja tuuma haavatavuste \u00e4rakasutamise katsete tuvastamiseks. Versiooninumbri 1.0.0 m\u00e4\u00e4ramine t\u00e4histab projekti k\u00fcpsuse saavutamist. Projekti kood on litsentseeritud GPLv2 alusel.       <\/p>\n<p>Moodul sobib nii <a href=\"https:\/\/prohoster.info\/et\/zhashchita-ot-ddos\/\"  data-wpil-monitor-id=\"5\">r\u00fcnnakute kaitsmiseks<\/a>, mis manipuleerivad juba tuntud Linuxi tuuma haavatavustega, kui ka eksploitide vastu, mis kasutavad veel tundmatuid haavatavusi, kui neid ei rakendata LKRG v\u00e4ltimiseks erilisi meetmeid. Kaitse p\u00f5hineb t\u00f6\u00f6tava tuuma volituste volitamata muutuste tuvastamisel (terviklikkuse kontroll) ja kasutajaprotsesside volituste muutuste j\u00e4lgimisel (eksploitide rakendamise tuvastamine).     <\/p>\n<p>T\u00f5enduse kontrollimist teostatakse r\u00e4sikoodide v\u00f5rdlemise alusel, mis arvutatakse k\u00f5ige olulisemate m\u00e4lu ja tuuma andmestruktuuride aluste, nagu IDT (katkestuste kirjeldustabel), MSR, s\u00fcsteemikutsumise tabelid, k\u00f5ik protseduurid ja funktsioonid, katkestuste t\u00f6\u00f6tlejad, laaditud moodulite nimekirjad, moodulite &#171;.text&#187; sektsiooni sisu ja protsesside atribuudid. Kontrollimisprotsess aktiveeritakse perioodiliselt taimeri v\u00f5i tuuma teatud s\u00fcndmuste toimumise korral, n\u00e4iteks setuid, setreuid, fork, exit, execve ja do_init_module s\u00fcsteemikutsumiste t\u00e4itmise korral.    <\/p>\n<p>V\u00f5imalike eksploitide tuvastamine ja r\u00fcnnakute blokeerimine toimub enne, kui tuum annab juurdep\u00e4\u00e4su ressurssidele (n\u00e4iteks enne faili avamist), kuid p\u00e4rast protsessi volituste omandamist (n\u00e4iteks UID muutmine). Kui tuvastatakse volitamata protsesside k\u00e4itumine, sunnitakse need l\u00f5petama, mis on paljude eksploitide blokeerimiseks piisav. Mooduli t\u00f6\u00f6 t\u00f5ttu tekkiv kulu on hinnanguliselt 2-2.5%.      <\/p>\n<p>Toetatud on t\u00f6\u00f6 x86-64, AArch64 (ARM64), ARM32 ja x86 arhitektuuride s\u00fcsteemides. LKRG 1.0.0 t\u00f6\u00f6 on testitud mitmesuguste jaotusversioonide kernelitega, alates RHEL \/ CentOS 7 kernelist 3.10 kuni 6.17-rc4 versioonini, mis valmistatakse ette Fedora 44 vabastamiseks. Pakette on saadaval ALT Linuxi, Arch Linuxi, Astra Linuxi, Gentoo, Guixi, NixOSi, Rocky Linuxi, Whonixi, Yocto ja OpenBMC jaoks. Rocky Linuxi jaoks koostatud pakette saab kasutada RHEL 8\/9 ja sellistes tuletatud jaotustes nagu AlmaLinux 8\/9, samuti pakette Whonixile, mis on m\u00f5eldud Debianile ja Ubuntu\u2019le.      <\/p>\n<p>Uue versiooni muudatuste hulgas on:  <\/p>\n<ul>\n<li class=\"l\"> Tagatud on \u00fchilduvus Linuxi kernelitest, mis ulatub kuni 6.17-rc4 versioonini.\n<li class=\"l\"> Kernelite versioonidest alates 6.13 on l\u00f5petatud kaugete override_creds() ja revert_creds() k\u00f5nede p\u00fc\u00fcdmine, mis on piiratud r\u00fcnnakute tuvastamine, mis \u00fcletavad cred osutajat. Piiranguid \u00fcritati kompenseerida cred osutaja kirjutamise kontrollide lisamise kaudu teistes kernelite kohtades.\n<li class=\"l\"> Liigne autentimisandmete j\u00e4lgimine, mille puhul terviklikkuse kontrolli ei tehta, on l\u00f5petatud. Muudatus v\u00f5imaldas v\u00e4hendada koodibaasi umbes 1500 rea v\u00f5rra.\n<li class=\"l\"> Linux 6.10 s\u00fcdamikus on lisatud tugi OverlayFS failis\u00fcsteemis ajutiste failide loomise mehhanismile, kasutades O_TMPFILE (ovl_tmpfile) valikut. Antud tugi on vajalik vale aktiveerimise v\u00e4ltimiseks, mis ilmneb eraldatud konteinerite kasutamisel s\u00fcsteemides, kus on s\u00fcdamikud 6.10-6.12.\n<li class=\"l\"> x86_64 s\u00fcsteemidele on lisatud Intel CET (Control-flow Enforcement Technology) tehnoloogiate tugi, et kaitsta t\u00e4idetavat koodi, kasutades IBT (indirect branch tracking) k\u00e4ske, samuti kCFI (kernel Control Flow Integrity) tarkvaralist kaitset, et blokeerida kontrollvoo normaalse j\u00e4rjestuse rikkumise (control flow) t\u00f5ttu, mis tuleneb eksploaitide rakendamisest, mis muudavad m\u00e4lu salvestatud funktsioonide n\u00e4idiseid.\n<li class=\"l\"> Paljude t\u00f6\u00f6tlejate \u00fchendamiseks kasutatakse kretprobesi asemel kprobesi mehhanismi, mis lihtsustab hook-ide seadistamise koodi ja v\u00f5imaldab saavutada k\u00f5rgemat j\u00f5udlust.\n<li class=\"l\"> Protsessispetsiifiliste andmete (per-task shadow data) lukustamise t\u00f6\u00f6 on \u00fcmber m\u00f5eldud. Liigsete lukustuste eemaldamise tulemusena on suudetud parandada juurdep\u00e4\u00e4su tootlikkust.\n<li class=\"l\"> Parandatud vead, mis viisid v\u00f5istlusolukordade, terviklikkuse kontrollimise ja valeh\u00e4irete probleemideni.\n<li class=\"l\"> Parandatud toe pakkumist Clang'i koostamiseks.  <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63827\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u043e\u0435\u043a\u0442 Openwall \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043c\u043e\u0434\u0443\u043b\u044c \u044f\u0434\u0440\u0430 LKRG 1.0.0 (Linux Kernel Runtime Guard), \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440 \u044f\u0434\u0440\u0430 \u0438 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u043e\u043f\u044b\u0442\u043e\u043a \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u044f\u0434\u0440\u0435. \u041e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u0438\u0435 \u043d\u043e\u043c\u0435\u0440\u0430 \u0432\u0435\u0440\u0441\u0438\u0438 1.0.0 \u043e\u0437\u043d\u0430\u043c\u0435\u043d\u043e\u0432\u0430\u043b\u043e \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c \u0437\u0440\u0435\u043b\u043e\u0433\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. \u041c\u043e\u0434\u0443\u043b\u044c \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442 \u043a\u0430\u043a \u0434\u043b\u044f \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0430\u0442\u0430\u043a, \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u0443\u044e\u0449\u0438\u0445 \u0443\u0436\u0435 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u043c\u0438 \u0443\u0437\u044f\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u043c\u0438 \u0432 \u044f\u0434\u0440\u0435 Linux, [&hellip;]<\/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-142366","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u043e\u0435\u043a\u0442 Openwall \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043c\u043e\u0434\u0443\u043b\u044c \u044f\u0434\u0440\u0430 LKRG 1.0.0 (Linux Kernel Runtime Guard), \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 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1.0.0 v\u00e4ljaanne Linuxi tuuma haavatavuste kaitseks | ProHoster","description":"Openwall projekt avaldas LKRG 1.0.0 (Linux Kernel Runtime Guard) tuuma mooduli, mis on m\u00f5eldud tuuma struktuuride terviklikkuse kontrollimiseks ja tuuma haavatavuste \u00e4ra kasutamise katsete tuvastamiseks. Kuni versiooni numbri 1.0.0 m\u00e4\u00e4ramine t\u00e4histab projekti k\u00fcpsuse saavutamist. Projekti kood levitatakse GPLv2 litsentsi alusel. 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