{"id":154965,"date":"2026-01-24T23:11:55","date_gmt":"2026-01-24T21:11:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-standartnyh-si-bibliotek-glibc-2-43-i-newlib-4-6-0"},"modified":"2026-01-24T23:11:55","modified_gmt":"2026-01-24T21:11:55","slug":"vypusk-standartnyh-si-bibliotek-glibc-2-43-i-newlib-4-6-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/vypusk-standartnyh-si-bibliotek-glibc-2-43-i-newlib-4-6-0","title":{"rendered":"A Glibc 2.43 \u00e9s newlib 4.6.0 standard C k\u00f6nyvt\u00e1rak kiad\u00e1sa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Hat h\u00f3napnyi fejleszt\u00e9s ut\u00e1n megjelent a GNU C Library 2.43 (glibc) rendszerk\u00f6nyvt\u00e1r kiad\u00e1sa, amely teljes m\u00e9rt\u00e9kben megfelel az ISO C23 \u00e9s a POSIX.1-2024 szabv\u00e1nyok k\u00f6vetelm\u00e9nyeinek. Az \u00faj verzi\u00f3 elk\u00e9sz\u00edt\u00e9s\u00e9ben 69 fejleszt\u0151 vett r\u00e9szt.     <\/p>\n<p>A Glibc 2.43-ban megval\u00f3s\u00edtott fejleszt\u00e9sek k\u00f6z\u00f6tt eml\u00edt\u00e9st \u00e9rdemel:   <\/p>\n<ul>\n<li class=\"l\"> Hozz\u00e1adt\u00e1k a Clang ford\u00edt\u00f3val val\u00f3 \u00e9p\u00edt\u00e9s k\u00eds\u00e9rleti lehet\u0151s\u00e9g\u00e9t, amely jelenleg csak az aarch64-linux-gnu \u00e9s x86_64-linux-gnu platformok sz\u00e1m\u00e1ra el\u00e9rhet\u0151, ha a fut\u00e1si id\u0151 kompatibilis a libgcc-vel. A Glibc \u00e9p\u00edt\u00e9s\u00e9hez legal\u00e1bb Clang 18-as verzi\u00f3 sz\u00fcks\u00e9ges.\n<li class=\"l\"> Linux rendszerekhez hozz\u00e1adt\u00e1k az mseal() f\u00fcggv\u00e9nyt, amely lehet\u0151v\u00e9 teszi a folyamatok sz\u00e1m\u00e1ra, hogy z\u00e1rolj\u00e1k a saj\u00e1t c\u00edmtartom\u00e1nyuk bizonyos r\u00e9szeinek megv\u00e1ltoztat\u00e1s\u00e1t.\n<li class=\"l\"> Linux rendszerekhez hozz\u00e1adva az openat2() funkci\u00f3, ellent\u00e9tben az openat() funkci\u00f3val, amely t\u00e1mogatja a kieg\u00e9sz\u00edt\u0151 c\u00edmk\u00e9k halmaz\u00e1t a f\u00e1jl\u00fatvonalak enged\u00e9lyez\u00e9s\u00e9nek korl\u00e1toz\u00e1s\u00e1ra (a bejegyz\u00e9si pontok, szimbolikus hivatkoz\u00e1sok, m\u00e1gikus hivatkoz\u00e1sok (\\\/proc\\\/PID\\\/fd) \u00e9s a \"..\\\/\" \u00f6sszetev\u0151k kereszt\u00fclv\u00e1g\u00e1s\u00e1nak megakad\u00e1lyoz\u00e1sa).\n<li class=\"l\"> Hozz\u00e1adt\u00e1k a free_sized, free_aligned_sized, memset_explicit \u00e9s memalignment f\u00fcggv\u00e9nyeket, amelyek a C23 szabv\u00e1nyban jelentek meg.\n<li class=\"l\"> A C23 szabv\u00e1ny szerint az assert h\u00edv\u00e1sa egy v\u00e1ltoz\u00f3 sz\u00e1m\u00fa argumentummal rendelkez\u0151 makroszk\u00e9nt van meghat\u00e1rozva, t\u00e1mogatva a vessz\u0151vel elv\u00e1lasztott kifejez\u00e9seket az inicializ\u00e1l\u00f3ban.\n<li class=\"l\"> A C23 szabv\u00e1ny szerint a bsearch, memchr, strchr, strpbrk, strrchr, strstr, wcschr, wcspbrk, wcsrchr, wcsstr \u00e9s wmemchr f\u00fcggv\u00e9nyek, amelyek mutat\u00f3kat adnak vissza a bemeneti t\u00f6mb\u00f6kre, makr\u00f3kk\u00e9nt lettek \u00fajra defini\u00e1lva, amelyek visszaadj\u00e1k a &#171;const&#187; min\u0151s\u00edt\u0151vel rendelkez\u0151 t\u00edpusra mutat\u00f3 mutat\u00f3t, ha a bemeneti argumentum egy, &#171;const&#187; min\u0151s\u00edt\u0151vel rendelkez\u0151 t\u00edpusra mutat\u00f3 mutat\u00f3.\n<li class=\"l\"> A math.h fejl\u00e9cf\u00e1jlhoz hozz\u00e1adt\u00e1k a long_double_t, _Float32_t, _Float64_t \u00e9s _Float128_t t\u00edpusok defin\u00edci\u00f3it, amelyek a C23 szabv\u00e1nyban jelentek meg.\n<li class=\"l\"> Hozz\u00e1adtak opcion\u00e1lis id\u0151sz\u00e1m\u00edt\u00e1si m\u00f3dokat: TIME_MONOTONIC (folyamatosan n\u00f6vekv\u0151 id\u0151, amely f\u00fcggetlen a rendszer\u00f3r\u00e1k v\u00e1ltoz\u00e1s\u00e1t\u00f3l), TIME_ACTIVE \u00e9s TIME_THREAD_ACTIVE (a folyamat vagy sz\u00e1l akt\u00edv v\u00e9grehajt\u00e1si ideje) a timespec_get f\u00fcggv\u00e9ny haszn\u00e1lat\u00e1ra.\n<li class=\"l\"> A CORE-MATH projektt\u0151l \u00e1t lett m\u00e1solva az acosh, asinh, atanh, erf, erfc, lgamma \u00e9s tgamma matematikai f\u00fcggv\u00e9nyek optimaliz\u00e1lt v\u00e1ltozata.\n<li class=\"l\"> Hozz\u00e1adt\u00e1k az fma, fmaf, remainder, remaindef, frexpf, frexp, frexpl (binary128) \u00e9s frexpl (intel96) f\u00fcggv\u00e9nyek optimaliz\u00e1lt megval\u00f3s\u00edt\u00e1sait.\n<li class=\"l\"> Jav\u00edtott\u00e1k a matematikai f\u00fcggv\u00e9nyek teljes\u00edtm\u00e9ny\u00e9t, mint az acosf, acoshf, asinhf, atan2f, atanhf, coshf, fmodf, lgammaf\/lgammaf_r, log10f, remainderf, sinhf, sqrtf, tgammaf, y0\/j0, y1\/j1 \u00e9s yn\/jn, az SVID hibakezel\u0151 k\u00f3d elt\u00e1vol\u00edt\u00e1s\u00e1val (a matherr felhaszn\u00e1l\u00f3i f\u00fcggv\u00e9ny h\u00edv\u00e1sa hiba eset\u00e9n) az \u00faj verzi\u00f3khoz (a m\u00e1r \u00f6ssze\u00e1ll\u00edtott programok kompatibilit\u00e1s\u00e1nak meg\u0151rz\u00e9se \u00e9rdek\u00e9ben ezek a kompatibilit\u00e1si m\u00f3dra vannak \u00e1ll\u00edtva).\n<li class=\"l\"> x86 rendszereken hozz\u00e1adva az Intel Nova Lake \u00e9s Wildcat Lake processzorok t\u00e1mogat\u00e1sa.\n<li class=\"l\"> A mem\u00f3ria allok\u00e1l\u00f3 malloc funkci\u00f3ban AArch64 rendszereken alap\u00e9rtelmez\u00e9s szerint enged\u00e9lyezve van a 2MB m\u00e9ret\u0171 nagy oldalak (transparent huge pages) t\u00e1mogat\u00e1sa (az ibc.malloc.hugetlb param\u00e9ter most 1-re van \u00e1ll\u00edtva). A clone() f\u00fcggv\u00e9nyben megval\u00f3s\u00edt\u00e1sra ker\u00fclt a ZA (Z-Array) \u00e1llapot kikapcsol\u00e1sa az SME (Scalable Matrix Extension) kiterjeszt\u00e9st t\u00e1mogat\u00f3 CPU-kon.\n<li class=\"l\"> A BTI (Branch Target Identification) kiterjeszt\u00e9st t\u00e1mogat\u00f3 AArch64 rendszerekhez hozz\u00e1adva a glibc.cpu.aarch64_bti be\u00e1ll\u00edt\u00e1s, amely lehet\u0151v\u00e9 teszi a BTI k\u00f6telez\u0151 aktiv\u00e1l\u00e1s\u00e1t minden v\u00e9grehajthat\u00f3 f\u00e1jl \u00e9s k\u00f6nyvt\u00e1r sz\u00e1m\u00e1ra. A BTI megakad\u00e1lyozza, hogy az \u00e1tir\u00e1ny\u00edt\u00e1sok tetsz\u0151leges k\u00f3dter\u00fcletekre t\u00f6rt\u00e9njenek, ezzel ellens\u00falyozva a gadgetek l\u00e9trehoz\u00e1s\u00e1t a visszat\u00e9r\u00e9s-alap\u00fa programoz\u00e1s exploitjaiban.\n<li class=\"l\"> A v\u00e9dett \u00e1gazonos\u00edt\u00f3 (Branch Target Identification) vagy \u0151rz\u00f6tt vez\u00e9rl\u0151 verem (Guarded Control Stack) kiterjeszt\u00e9s\u00e9t t\u00e1mogat\u00f3 AArch64 rendszereken megengedett a &#171;LD_DEBUG=security&#187; k\u00f6rnyezeti v\u00e1ltoz\u00f3 haszn\u00e1lata, amely figyelmeztet\u00e9seket gener\u00e1l a linker sz\u00e1m\u00e1ra, amikor az olyan v\u00e9grehajthat\u00f3 f\u00e1jlokat \u00e9s k\u00f6nyvt\u00e1rakat t\u00f6lt be, amelyek nem t\u00e1mogatj\u00e1k ezeket a kiterjeszt\u00e9seket.\n<li class=\"l\"> A AArch64 rendszerekhez vektoriz\u00e1lt verzi\u00f3k ker\u00fcltek hozz\u00e1ad\u00e1sra az exp2m1, exp10m1, log10p1, log2p1 \u00e9s rsqrt f\u00fcggv\u00e9nyekhez.\n<li class=\"l\"> A RISC-V architekt\u00far\u00e1hoz hozz\u00e1adva egy optimaliz\u00e1lt memset funkci\u00f3, amely az RVV (RISC-V Vector) kiterjeszt\u00e9st haszn\u00e1lja.\n<li class=\"l\"> A teszthalmaz szignifik\u00e1nsan b\u0151v\u00edtette a t\u00f6bb sz\u00e1l\u00fa ellen\u0151rz\u00e9seket \u00e9s a scanf, strerror \u00e9s strsignal funkci\u00f3kat.\n<li class=\"l\"> A k\u00f3dol\u00e1sok adatai, a karaktert\u00edpusok inform\u00e1ci\u00f3i \u00e9s a transliter\u00e1ci\u00f3s t\u00e1bl\u00e1k friss\u00edtve lettek a Unicode 17.0.0 specifik\u00e1ci\u00f3 t\u00e1mogat\u00e1s\u00e1ra.\n<li class=\"l\"> Az LD_PROFILE funkcionalit\u00e1s megval\u00f3s\u00edt\u00e1sa sor\u00e1n megsz\u0171nt az alap\u00e9rtelmezett k\u00f6nyvt\u00e1r (\\\/var\\\/tmp) haszn\u00e1lata a profiloz\u00e1si adatok t\u00e1rol\u00e1s\u00e1ra. Az ilyen adatok t\u00e1rol\u00e1s\u00e1hoz most m\u00e1r explicit m\u00f3don meg kell hat\u00e1rozni a k\u00f6nyvt\u00e1rat az LD_PROFILE_OUTPUT k\u00f6rnyezeti v\u00e1ltoz\u00f3n kereszt\u00fcl.\n<li class=\"l\"> Sebezhet\u0151s\u00e9gek kik\u00fcsz\u00f6b\u00f6lve:\n<ul>\n<li class=\"l\"> CVE-2026-0861 \u2014 eg\u00e9sz sz\u00e1mok t\u00falcsordul\u00e1sa a memalign f\u00fcggv\u00e9nyben, ami a verem s\u00e9r\u00fcl\u00e9s\u00e9hez vezet.\n<li class=\"l\"> CVE-2026-0915 \u2014 a verem tartalm\u00e1nak kisziv\u00e1rg\u00e1sa a getnetbyaddr \u00e9s getnetbyaddr_r f\u00fcggv\u00e9nyekben.\n<li class=\"l\"> CVE-2025-15281 \u2014 inicializ\u00e1latlan mem\u00f3ria visszaad\u00e1sa, amely marad\u00e9k adatokat tartalmazhat, amikor a wordexp f\u00fcggv\u00e9nyt WRDE_REUSE \u00e9s WRDE_APPEND param\u00e9terekkel haszn\u00e1lj\u00e1k.      <\/ul>\n<\/ul>\n<p>Tov\u00e1bb\u00e1, egy \u00e9v fejleszt\u00e9s ut\u00e1n a Cygwin projekt kiadta az \u00faj standard C k\u00f6nyvt\u00e1r newlib 4.6.0 verzi\u00f3j\u00e1t, amelyet a Red Hat m\u00e9rn\u00f6kei fejlesztenek. A k\u00f6nyvt\u00e1r c\u00e9lja egy t\u00f6m\u00f6r standard C k\u00f6nyvt\u00e1r (libc) megval\u00f3s\u00edt\u00e1s\u00e1nak biztos\u00edt\u00e1sa, amely be\u00e1gyazott rendszereken haszn\u00e1lhat\u00f3 kis \u00e1lland\u00f3 t\u00e1rol\u00f3- \u00e9s RAM m\u00e9rettel. A projekt k\u00f3dj\u00e1t C nyelven \u00edrt\u00e1k, \u00e9s az LGPLv2 licenc alatt terjesztik.      <\/p>\n<p> Az \u00faj newlib verzi\u00f3ban:  <\/p>\n<ul>\n<li class=\"l\"> B\u0151v\u00fclt a POSIX.1-2024 specifik\u00e1ci\u00f3 t\u00e1mogat\u00e1sa.\n<li class=\"l\"> Javult a memcpy, mempcpy \u00e9s memmove f\u00fcggv\u00e9nyek teljes\u00edtm\u00e9nye.\n<li class=\"l\"> Hozz\u00e1adva a &#171;&#8212;enable-newlib-hw-misaligned-access&#187; opci\u00f3.\n<li class=\"l\"> Az RISC-V architekt\u00far\u00e1ra optimaliz\u00e1lt\u00e1k a mem* \u00e9s str* funkci\u00f3kat.\n<li class=\"l\"> A lokaliz\u00e1ci\u00f3k kezel\u00e9s\u00e9nek k\u00f3dja \u00e1t lett dolgozva, amely megsz\u00fcntette a global_locale_string glob\u00e1lis v\u00e1ltoz\u00f3t azzal, hogy minden lokalit\u00e1s sz\u00e1m\u00e1ra k\u00fcl\u00f6n locale_string v\u00e1ltoz\u00f3kat vezettek be a locale_t t\u00edpus\u00fa objektumokhoz.\n<li class=\"l\"> T\u00e1mogat\u00e1s hozz\u00e1adva az \u00faj m68k-atari-elf platformhoz.\n<li class=\"l\"> A FreeBSD gdtoa k\u00f6nyvt\u00e1r\u00e1b\u00f3l \u00e1tker\u00fclt a strtorQ.c k\u00f3d, amely a 128 bites &#171;long double&#187; t\u00edpus t\u00e1mogat\u00e1s\u00e1nak megval\u00f3s\u00edt\u00e1s\u00e1hoz sz\u00fcks\u00e9ges a strtold f\u00fcggv\u00e9nyben.\n<li class=\"l\"> A k\u00f3dol\u00e1si adatok friss\u00edtve lettek az Unicode 17.0-ra.    <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64670\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 GNU C Library 2.43 (glibc), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044f\u043c \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043e\u0432 ISO C23 \u0438 POSIX.1-2024. \u0412 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u043f\u0440\u0438\u043d\u044f\u043b\u0438 \u0443\u0447\u0430\u0441\u0442\u0438\u0435 69 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432. \u0418\u0437 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0432 Glibc 2.43 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u0431\u043e\u0440\u043a\u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u043e\u043c Clang, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043a\u0430 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c aarch64-linux-gnu \u0438 x86_64-linux-gnu \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 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