{"id":118103,"date":"2024-07-22T21:43:01","date_gmt":"2024-07-22T19:43:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-sistemnoj-biblioteki-glibc-2-40"},"modified":"2024-07-22T21:43:01","modified_gmt":"2024-07-22T19:43:01","slug":"vypusk-sistemnoj-biblioteki-glibc-2-40","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/vypusk-sistemnoj-biblioteki-glibc-2-40","title":{"rendered":"Utgivningen av systembiblioteket Glibc 2.40","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Efter sex m\u00e5naders utveckling har lanseringen av det systembibliotek som ing\u00e5r i GNU C Library (glibc) 2.40 offentliggjorts, vilket helt f\u00f6ljer kraven i standarderna ISO C11 och POSIX.1-2017. Den nya utg\u00e5van inneh\u00e5ller korrigeringar fr\u00e5n 68 utvecklare.     <\/p>\n<p>Bland f\u00f6rb\u00e4ttringarna i Glibc 2.40 kan n\u00e4mnas:   <\/p>\n<ul>\n<li class=\"l\"> Nya exponentiella och logaritmiska funktioner har lagts till i headerfilen math.h, definierade i standarden C23: exp2m1, exp10m1, log2p1, log10p1 och logp1. Funktionerna finns tillg\u00e4ngliga i varianter f\u00f6r typerna float, double, long double, _FloatN och _FloatNx.\n<li class=\"l\"> Makarosen _ISOC23_SOURCE har lagts till f\u00f6r att definiera anv\u00e4ndningen av funktioner som erbjuds i standarden C23 (f\u00f6r n\u00e4rvarande \u00e4r endast en del av funktionerna fr\u00e5n C23 implementerade i Glibc). Anv\u00e4ndning av C23 kan ocks\u00e5 aktiveras vid kompilering genom att ange alternativen -std=c23, -std=gnu23, -std=c2x eller -std=gnu2x i GCC.\n<li class=\"l\"> En inst\u00e4llning \"glibc.rtld.enable_secure\" har lagts till, vilket m\u00f6jligg\u00f6r att k\u00f6ra programmet som om det hade flaggan f\u00f6r byte av anv\u00e4ndaridentifierare (setuid) aktiverad under testning.\n<li class=\"l\"> Headerfilen epoll.h har uppdaterats p\u00e5 Linux-plattformen f\u00f6r att st\u00f6dja nya ioctl och strukturer f\u00f6r epoll som har inf\u00f6rts i Linux-k\u00e4rnan 6.9.\n<li class=\"l\"> Funktionen f\u00f6r att uppt\u00e4cka potentiella buffer\u00f6verskridningar och relaterade s\u00e4kerhetsfel under k\u00f6rning av str\u00e4ng- och minneshanteringsfunktioner (\"_FORTIFY_SOURCE\") har anpassats f\u00f6r att bygga Glibc med Clang-kompilatorn.\n<li class=\"l\"> I biblioteket med vektoriserade matematiska funktioner (libmvec) f\u00f6resl\u00e5s implementationer av funktionerna acosh, asinh, atanh, cbrt, cosh, erf, erfc, hypot, pow, sinh och tanh f\u00f6r arkitekturen Aarch64.\n<li class=\"l\"> P\u00e5 x86-system har det lagts till m\u00f6jlighet att st\u00e4nga av anv\u00e4ndning av tillf\u00e4lliga buffertar i memset-funktionen f\u00f6r att p\u00e5skynda skrivning av stora datam\u00e4ngder. Optimeringen aktiveras med inst\u00e4llningen \"x86_memset_non_temporal_threshold\".\n<li class=\"l\"> Makros i headerfilen stdbit.h, som arbetar med olika typer (typ-generic), har i GCC 14 \u00f6versatts f\u00f6r att anv\u00e4nda de inbyggda funktionerna __builtin_stdc_bit_ceil f\u00f6r att st\u00f6dja operander av typerna __int128 och _BitInt(N).\n<li class=\"l\"> F\u00e4lten med epokr\u00e4knare i strukterna lastlog, utmp och utmpx har \u00f6versatts fr\u00e5n att anv\u00e4nda en 32-bitars signerad typ till en icke-signerad typ, vilket g\u00f6r det m\u00f6jligt att f\u00f6rl\u00e4nga den maximala adresserbara tiden av r\u00e4knaren fr\u00e5n 2038 till 2106.\n<li class=\"l\"> S\u00e5rbarheter \u00e5tg\u00e4rdade:\n<ul>\n<li class=\"l\"> CVE-2024-2961 \u2014 buffer\u00f6verskridning vid konvertering av speciellt utformade str\u00e4ngar i ISO-2022-CN-EXT-kodning av funktionen iconv(). I praktiken kan s\u00e5rbarheten utnyttjas f\u00f6r en fj\u00e4rrattack mot PHP-applikationer, vilket leder till exekvering av kod.\n<li class=\"l\"> CVE-2024-33599 \u2014 buffer\u00f6verskridning i koden f\u00f6r att hantera netgroup-cache i nscd (Name Service Cache Daemon). S\u00e5rbarheten kan utnyttjas genom att en klient skickar en speciellt utformad beg\u00e4ran.\n<li class=\"l\"> CVE-2024-33600 \u2014 dereferering av en nollpekare i nscd-processen, vilket kan leda till krasch vid hantering av vissa beg\u00e4rningar.\n<li class=\"l\"> CVE-2024-33601 \u2014 fel vid hantering av netgroup-cache kan leda till krasch av nscd-processen p\u00e5 grund av minnesallokeringsfel.\n<li class=\"l\"> CVE-2024-33602 \u2014 minneskorruption vid hantering av netgroup-cache i nscd-processen.      <\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61594\">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 (glibc) 2.40, \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 C11 \u0438 POSIX.1-2017. \u0412 \u0441\u043e\u0441\u0442\u0430\u0432 \u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u044b \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043e\u0442 68 \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 2.40 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c: \u0412 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u0447\u043d\u044b\u0439 \u0444\u0430\u0439\u043b math.h \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u043e\u0432\u044b\u0435 \u044d\u043a\u0441\u043f\u043e\u043d\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u0438 \u043b\u043e\u0433\u0430\u0440\u0438\u0444\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0435 \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0435 C23: exp2m1, exp10m1.log2p1, [&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-118103","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 (glibc) 2.40, \u043a\u043e\u0442\u043e\u0440\u0430\u044f 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