I-DDR5 Isengcupheni ye-Phoenix RowHammer: Ukuhlaziywa, Izingozi, kanye Nokunciphisa

Hardware Guide » Izingxenye » Imemori ye-RAM » I-DDR5 Isengcupheni ye-Phoenix RowHammer: Ukuhlaziywa, Izingozi, kanye Nokunciphisa

Umphakathi wezokuphepha kanye nezingxenyekazi zekhompuyutha uphinde ubheke inkumbulo eyinhloko: ukuhlasela okusha kohlobo lwe-RowHammer, okubizwa ngokuthi I-Phoenix (CVE-2025-6202), ibonisa ukuthi amamojula athile e-SK Hynix DDR5 ahlala esengozini naphezu kokuvikelwa okuthuthukisiwe. Ucwaningo oluhlanganyelwe olwenziwa yi-ETH Zurich kanye ne-Google lwembula, ngokuhlolwa okuphindaphindekayo, ukuthi ukukhushulwa kwelungelo lokuthola impande kungenzeka kumakhompiyutha edeskithophu anezilungiselelo ezizenzakalelayo endabeni yemizuzu. imizuzu.

Ngaphandle kwesihloko, into ebalulekile ukuthi abacwaningi bachaze ngokunembile ukuthi kungani ukuzivikela kwe-DRAM-embedded (TRR) kwehluleka nokuthi bakwazi kanjani ukuvilapha. Babhale amaphethini wokusando amanoveli, isikhathi sokuvuselela ukuzilungisa, kanye nezimo zokuxhashazwa zomhlaba wangempela ezithinta izindawo zasendaweni nezabaqashile abaningiKonke lokhu kuhambisana nezinto zobuciko zomphakathi kanye nokuxhumana okunomthwalo wemfanelo nabakhiqizi nabahlinzeki bamafu.

Iyini i-RowHammer futhi kungani ibuya ngamandla?

I-RowHammer ubuthaka behadiwe ku-DRAM lapho ukufinyelela okuphindaphindiwe kumugqa kungaholela khona ama-flips kancane emigqeni engumakhelwane, okukhiqiza inkohlakalo yedatha. Kusukela ekubonisweni kwayo kokuqala ngo-2014, kubonakale ukuthi, njengoba ukuminyana kwamaseli kukhuphuka ukuze kwandiswe umthamo, inani lokwenziwa kusebenze elidingekayo ukuze kufakwe i-flip kancane liyakhula. ukunciphisa, okwandisa ingozi.

Imithelela ebonakalayo yaziwa kahle: inkohlakalo yezinhlaka zesistimu ezibucayi, ukukhuphuka kwamalungelo, noma ukunqatshelwa kwesevisi. Ucwaningo lwangaphambilini lubonise ukuthi ukuthambekela kuncike ekuguquguqukeni okuningi, okuhlanganisa lokushisa, amandla kagesi, ukuhluka kokukhiqiza, amaphethini edatha egciniwe, amaphethini okufinyelela kumemori, nezinqubomgomo zesilawuli.

Ukunciphisa okufana neKhodi Yokulungisa Iphutha (ECC) kanye Nokuvuselela Umugqa Oqondisiwe (TRR) kuphakanyiswe ukuthi kuqukathe inkinga. Kodwa-ke, umsebenzi olandelayo ubonise ukuthi lezi zivikelo zingavinjwa ngokuhlaselwa okuyinkimbinkimbi kakhulu: I-TRRespass, SMASH, Half-Double noma Blacksmith, phakathi kwabanye. Imiphumela iye yabonakala nasezindaweni ezibonakala zihluke kakhulu, njenge ukubhalwa kweminwe yamadivayisi ngokusebenzisa okuhlukile okutholiwe.

Ngokuhambisanayo, inhlangano ye-JEDEC isanda kwethula indlela yobuqotho ebizwa nge-Per-Row Activation Counting (PRAC) ukuze ithole amaphethini e-RowHammer futhi inqande ithrafikhi enolaka. Kodwa-ke, ngokusho kwe-Google, amasistimu e-DDR5 ahloliwe awazange afake i-PRAC, okushiya umnyango uvulelwe izindlela ezintsha zokuxhaphaza. ekukhiqizeni.

I-Phoenix (CVE-2025-6202): Ubani oyitholile nokuthi yenzani

Ithimba elihlangene elivela ku-ETH Zürich (COMSEC) kanye ne-Google lihlonze a iphuzu elingaboni kuzivikelo ezihlanganisiwe ze-SK Hynix ze-DDR5 TRR. I-Phoenix ifinyelela ilungelo lokuqala lokuya ekupheleni ku-PC yomthengi ene-DDR5 ejwayelekile, ifinyelela impande enezilungiselelo ezizenzakalelayo nje. Imizuzwana engu-109 esimweni esivumayo kakhulu, kanye nezikhathi zokuxhaphaza ezijwayelekile zemizuzu emi-5 namasekhondi ayi-19 kumademo athile.

Ucwaningo luhlolwe kusistimu ene-CPU I-AMD Zen 4 kanye namamojula e-SK Hynix DDR5, ngenhloso yokuwaphindaphinda kamuva kwenye inkumbulo namaphrosesa. Imiphumela ithinta amamojula angu-15 akhiqizwe phakathi kuka-2021 no-2024: wonke ama-bit flips ethulwe ngaphansi kwephethini eyodwa yamaphethini amasha amabili athuthukiswe iqembu. Ukuhlasela kuhlelwe ngokuthi I-CVE-2025-6202 futhi inikezwa ukuqina okuphezulu ku-CVSS v4 (7.1), enamanani nama-vector abhalwe emithonjeni efana ne-Miter ne-NVD.

Iqiniso elibalulekile: i ECC ayivimbeli i-RowHammer ku-DDR5. Ababhali babonisa ukuthi ama-flips angaqongelela ngokuhamba kwesikhathi, njengoba i-on-chip ECC ilungisa ngesikhathi sokubhala noma ngokulungiswa ngezikhathi ezithile (isb., njalo emahoreni angama-24). Ukugoqa isikhathi eside, ku-cadence efanele, kuyakuvumela dlula lelo ngqimba lokuvikela.

Amathuba okuxhashazwa asukela ekuguquleni amathebula ekhasi ukuthola ukufinyelela kokufunda/ukubhala okunganasizathu, kuze kufike ekukhipheni okhiye be-RSA‑2048 emishinini ebonakalayo etholakala ngokuhlanganyela (ephula ukuqinisekiswa kwe-SSH) noma ukukhohlisa amabhinari afana sudo ukuphakamisa amalungelo endawo. Ngakho-ke, sibhekene nesimo esithinta kokubili izindawo zokusebenza kanye nengqalasizinda okwabelwana ngayo.

Ukuthi bazuze kanjani i-bypass: I-TRR, izikhathi zamasampula namaphethini amasha

Inhliziyo yokutholwa yi- ukuhlanekezela ubunjiniyela yokunciphisa i-TRR ku-DRAM. Ngokuhlola okusekelwe ku-FPGA kusetshenziswa amaphutha okugcina njengesiteshi eseceleni, abacwaningi babone ukuthi uhlelo lwesampula lwe-TRR luphinda isikhathi salo njalo. 128 tREFI izikhawu, ububanzi obuphindwe izikhathi ezingu-8 kunalolo olucatshangwa amaphethini akudala e-RowHammer.

“Ngokusondeza”, ucwaningo lubonisa ukuthi, ezinkathini zokugcina ezingu-64 zalowo mjikelezo, kunesakhiwo esincane esiphindayo sezikhawu ezincane ezine lapho ezimbili zokuqala zithathwa khona. kancane noma cishe lutho. Le-asymmetry ishiya iwindi lethuba: uma ukushaya kwesando kuhambisana nalezi zindawo “ezingamasampula amancane”, izivikelo ungaboni umsebenzi anolaka ngesikhathi.

Ngokusekelwe kulokho, iqembu lithole amaphethini amabili esikhathi eside. Eyokuqala ihlanganisa nje 128 tREFI; gwema ukushaya ngesando ekuqaleni futhi ugxilise umsebenzi kumabhande amasampula amancane, uphinda leyo ngxenye yesibili izikhathi eziyi-16 ukuze uqoqe izikhawu zokusando ezisebenzayo ezingama-32 ngokuphindaphinda. Eyesibili ihlanganisa iphethini ende kakhulu ye 2608 tREFI, eyenzelwe amanye amadivaysi anomehluko wangaphakathi.

Isikhathi sibalulekile: kuphela I-2 kusuka ku-128 Ukuvuselela kabusha kusengcupheni, okunikeza amathuba okuqala okushaywa angu-1,56%. Ukwandisa amathuba abo, basebenzisa ukulandelana okufanayo kwe-offset ngokuhambisana kwelinye lamabhange amane, okwandisa amathuba okushaya i-offset efanele ngo-16 kuze kube cishe. 25%.

Ukuvumelanisa ukuzilungisa: ukugxumela phambili kusuka emizamweni yangaphambilini

Inselele enkulu kwakuwukugcina ukuhambisana ne iziphuzo ezithambile ngaphezu kwezinkulungwane zezikhawu, njengoba amaphethini ase-Phoenix angu-1 kuya ku-2 oda lobukhulu obukhulu kunamaphethini ajwayelekile. Ababhali bathole ukuthi inqubo yokuvumelanisa ye-Zenhammer, ngisho nasezintweni ezinemicu eminingi, ayigcini ukuzinza isikhathi eside ngokwanele ukuze icuphe ngokuthembekile ukuphenduka.

Isixazululo siwubuchwepheshe be ukuzilungisa ukuvumelanisa lokho kusebenzisa ithuba lokuvuselela ngezikhathi ezithile: akudingi ukuthola umyalo ngamunye; esikhundleni salokho, ithola ukungahleleki kahle futhi iqondise kabusha ukwenziwa kwephethini ukuze ihambisane nesivinini, noma ngabe ukuvuselela okufika ngesikhathi kugejiwe. Le ndlela ivumela ukugcinwa kwe- ukuvumelana kuzo zonke izinkulungwane ze-tREFI.

Ukukhombisa ukuthuthukiswa, abacwaningi baveza ukuthi ngenxa yalokhu kuvumelanisa okuqinile bangakwazi ukugcina iphethini yabo ngesikhathi esiphelele nemijikelezo yangaphakathi ye-TRR, into izindlela zangaphambili ezingakwazi ukuyithola ngaphandle kokuwela igebe ngemva kwezikhawu ezingamakhulu ambalwa.

Ngokwezinto ezibonakalayo, lokhu kuzinza yikho okuvumela ukukalwa komshini kuya ekupheleni. ideskithophu nge-DDR5, efinyelela umvuthwandaba kumalungelo ezimpande anemingcele ezenzakalelayo ngezikhathi ezinolaka njengemizuzwana eyi-109 ekuboniseni kwayo.

Imiphumela yokuhlola: ama-DIMM angu-15 asengozini kanye nokuphenduka okusebenzisekayo

Ithimba lihlolile Amamojula ayi-15 e-DDR5 avela kwa-SK Hynix enziwe phakathi kwasekupheleni kuka-2021 nasekupheleni kuka-2024. Konke kubonise ama-bit flips anephethini eyodwa lalawa amabili. Iphethini emfushane ye-128 tREFI ibe nomphumela, ngokwesilinganiso, 2,62 × esebenza kahle kakhulu kunalena ende, inikezela ngokulandelana kwezinkulungwane zokuphenduka nge-DIMM ngayinye: iphepha licaphuna isilinganiso esilinganiselwe 4989 iziqephu ekuhlolweni kwabo.

Lawa mapheshana abe yizinto zokuqala ezimweni ezintathu ezaziwayo kakade: (i) inkohlakalo ye PTEs ukufunda/ukubhala inkumbulo engafanele (wonke ama-DIMM asengozini); (ii) Ukukhishwa okungukhiye we-RSA-2048 kusuka kuma-VM ahlanganisiwe ukuze kuphulwe i-SSH ( 73% yama-DIMM asengozini); kanye (iii) nokuguqulwa kokubini sudo ukuphakamisa amalungelo endawo (ku-33% wama-DIMM asengozini).

Ngaphezu kwalokho, ababhali baphindaphinda okokuqala ku-DDR5 ukukhuphuka kwelungelo lomsebenzi we-Rubicon, okubonisa izikhathi zokuxhashazwa ezimaphakathi. 5:19 ngaphansi kwezimo zokuhlola ezilawulwayo, okuqinisa ukusebenza okungokoqobo kokuhlasela ngaphandle kwelabhorethri.

Ukuhlolwa kwasekelwa ohlelweni olunamamojula we-AMD Zen 4 CPU kanye ne-SK Hynix. Ithimba lihlela ukunweba ukuhlola kwamanye amasistimu. abakhiqizi kanye nezakhiwo zokuqonda ububanzi obugcwele; kodwa-ke, inhlanganisela yamanje isivele imele indawo yesimanje yedeskithophu ye-DDR5.

Njengedatha yengcuphe ehlanganisiwe, amamethrikhi ahlukahlukene abeka i-Phoenix ebunzimeni obufanele: CVSS v4 7.1 (Phezulu) nge-vector ebhaliwe; I-CVSS v3 5.5 (okulingene) ngevekhtha AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N; kanye ne-CVSS v2 2.1 (Phansi) ngevekhtha AV:L/AC:L/Au:N/C:N/I:P/A:N. I-EPSS ehlobene ilinganiselwa kokuthi 0.00014, okubonisa amathuba okuxhashazwa abonwa ku-ecosystem, nakuba lesi sibalo kufanele sihunyushwe kanye nomthelela wobuchwepheshe ofakazelwe.

Ukunciphisa kanye nezindleko zokuvikela namuhla

Njengesilinganiso sokushaqeka, abacwaningi batusa kathathu isilinganiso sokuvuselela (3×), okuthe ezinhlelweni zabo kwamisa ukuphenduka kwe-Phoenix. Njengoba i-tREFI iseduze Ama-1,3 μs, lokhu kulungiswa kusho imisebenzi eminingi yokuvuselela futhi, ngakho-ke, izindleko zokusebenza ezilinganisekayo: ku-SPEC CPU2017 babika kuze kufike 8,4% yokugcwala ngokweqile.

Baphinde baveze ukuthi abahlinzeki nama-OEM banama-levers asheshayo: Ukuvuselelwa kwe-BIOS/firmware ukulungisa izinqubomgomo zememori noma ukuvuselela amapharamitha. Eqinisweni, efasiteleni le-embargo, i-AMD imemezele ukutholakala kwesibuyekezo se-BIOS semishini yamakhasimende, nakuba ababhali behlulekile ukuqinisekisa ngokuzimela ukuthi inciphisa kangakanani. Phoenix.

Okubalulekile: I-On-die ECC ayisona "isihlangu somlingo." Ngokusho kwephepha, ukulungisa kuhlehlisiwe kuvumela ama-flips ukuthi aqongelele uma umhlaseli enza izando ezinephethini edlula isihlungi se-TRR. Ngakho-ke, I-ODECC akuvimbeli, ngokwako, ukuthi ukuhlasela kuqhubeke ku-DDR5 ngaphansi kwezimo ezichazwe.

Uma sibheka esikhathini esimaphakathi, umkhakha udinga ukuncishiswa “kwezimiso”, hhayi izimpendulo ze-ad-hoc kwiphethini entsha ngayinye. I-JEDEC ichaze ama-PRAC, kodwa ababhali kanye ne-Google bakuveza lokho DDR5 amasistimu ihlolwe ungayifaki, ishiya indawo yokugwema. Ukusatshalaliswa okubanzi kwezinqubo zokubala amarowu kanye nezinqubomgomo zokuvuselela kabusha okuguquguqukayo kungase kukhuphule izinga ngokuphawulekayo.

Umongo: Okunye ukuhlasela kanye nendima yamaseva e-ECC

I-RowHammer ibilokhu iqongelela okuhlukile, ngayinye ibeka ingcindezi ohlangothini oluhlukile lwezokuvikela. Ngokungeziwe ku-TRRespass, SMASH, Half-Double, kanye neBlacksmith, ucwaningo lwakamuva lwethulwe I-OneFlip (phenya kancane ukuze uguqule izisindo zemodeli ye-DNN futhi ubangele ukuziphatha okungafunwa) kanye I-ECC.yehlulekile (ukuhlasela kokuqala okuphumelelayo kokuphela kuya kokuphela ngokumelene nemishini yeseva ye-DDR4 enenkumbulo ye-ECC, okuheha ama-flips ezindaweni ezithile ezigwema ukutholwa/ukulungiswa).

Ngokombono, amaseva anokuvikela okwengeziwe ekonakaleni kwenkumbulo (okufana ne-ECC yemisebe ye-cosmic noma i-RowHammer), kodwa i-ECC.fail ibonise ukuthi, ngesisusa esifanele, bangakwazi futhi isivunoI-Phoenix ijoyina lolo hlu olungaphambili lwe-DDR5 yedeskithophu, okufakazela ukuthi ibhalansi phakathi kokuminyana, ukusebenza, nokuqina kuwumugqa omuhle.

Ngisho nabakhiqizi abasunguliwe kanye ne-ecosystem bathintwa ucwaningo olunjalo (isb., I-Nvidia noma amapulatifomu e-DDR4), futhi akukhona ukuqondana: njengoba ama-transistors namaseli esondelana, ukuphazamiseka kukagesi kanye namashaneli aseceleni ahlangana izintuba lokho kwakungekho ngaphambili.

Ukufunda kucacile: ukuncishiswa kufanele kuguquke nge-physics yehadiwe, kuhlanganiswe telemetry kanye nezimpendulo eziguquguqukayo eziphuma ekucabangeni kwesampula okumile, ngokuqondile isithende se-Achilles i-Phoenix esisebenzisayo ku-DDR5 esikalini.

Ukudalula okunesibopho, ukulandelana kwezikhathi nezinsiza

U-ETH Zürich uqale inqubo ye ukudalulwa okunomthwalo wemfanelo nge-Swiss NCSC ngoJuni 6, 2025, yazisa i-SK Hynix, abakhiqizi be-CPU, nabahlinzeki bamafu abakhulu. Udaba lwahlala luvinjelwe kwaze kwaba uSepthemba 15, 2025. Ngaphambi nje kwalokho, ngoSepthemba 12, i-AMD yabika ukuthi I-BIOS kumakhompuyutha eklayenti, ngaphandle kokuqinisekiswa okuzimele ngababhali.

Umsebenzi ophelele uzokwethulwa ku- I-IEEE Symposium on Security and Privacy 2026Iphepha nama-artifact (okuhlanganisa i-PoC namathuluzi okuhlola) kutholakala esidlangalaleni: ungabheka i-PDF nendawo yokugcina ukuze ukhiqize kabusha izivivinyo futhi uhlole amamojula akho elabhorethri elawulwayo.

Izixhumanisi Eziwusizo: iphepha ku-PDF y I-Phoenix Repository ku-GitHub. I-Google iphinde ishicilele okufakiwe kuyo Ibhulogi Yezokuphepha ukuxoxa ngobubanzi namathuluzi okuhlola we-DDR5.

Amakhadi okuba sengozini abonisa njengemithombo Miter y I-NVD, eshicilelwe futhi yabuyekezwa ngoSepthemba 15, 2025, ngaphansi kwegama elithi Phoenix. Ithegi ye-CVE-2025-6202 kanye nama-vectors ayo avumela amaqembu engcuphe ukuthi abeke phambili futhi aveze izinqumo zokunciphisa esebenzisa imibandela engashintshi.

Amanothi womkhiqizi nokucatshangelwa kwezomthetho

I-AMD ishicilele incwadi yokuzihlangula egcizelela ukuthi ulwazi lobuchwepheshe lungaqukatha okunganembile, ayenzi ziqinisekiso, ezivezwayo noma ezishiwoyo, futhi ayithathi sikweletu ngokusetshenziswa kwehadiwe noma isofthiwe echazwe. Futhi qaphela ukuthi i-AMD, i-EPYC, ne-Ryzen yizimpawu zokuthengisa ubunikazi yenkampani, nokuthi isifinyezo esithi CVE kanye nelogo yayo kungokweThe MITER Corporation.

Isaziso esifanayo sithi okuqukethwe okuvela eceleni kunikezwa “njengoba kunjalo” (NJENGOBA KUNJALO) futhi ukusetshenziswa kwayo kusengozini yomfundi. Lolu hlobo lokuzihlangula luvamile kumadokhumenti okusebenza futhi akuthinti ukufaneleka kwe okutholakele izifundiswa, kodwa kufanelekile ukukukhumbula ekusetshenzisweni okukhiqizayo kanye nokuxhumana kwezinkampani.

Okufanele bakwenze abasebenzisi, abalawuli nabahlinzeki

Uma usebenzisa imishini ye-SK Hynix DDR5, isinyathelo sokuqala yokusungula amamojula futhi ubuyekeze izinguqulo ze-BIOS/firmware ezitholakalayo endaweni yakho. Ama-OEM amaningi angase akhulule ama-tweaks aphakamisa umkhawulo wokuphepha kuyilapho ukuncishiswa okujulile kwenziwa.

Okwesibili, hlola elebhu evaliwe (ayikhiqiziwe) ukuze uthole ukuthi usengozini yini kuma-artifact asesidlangalaleni e-Phoenix, ikakhulukazi uma usebenzisa izindawo eziqashe abantu abaningi noma imithwalo ebucayi (isb., okhiye inkumbulo ye-cryptographic). Ithuluzi le-ETH/Google lihlanganisa izinsiza zokuhlola ezidizayinelwe i-DDR5, nezincomo ezicacile zokusetshenziswa okufanele.

Uma ukuhlola kwakho kubonisa ukuphenduka, cabanga ukwenza kusebenze 3 × soda Kuzinhlelo ezibucayi kakhulu, kucatshangelwa izindleko zokusebenza. Ngaphansi kwemithwalo lapho i-SLA ivumela khona, ukuthi u-8,4% okalwe nge-SPEC ungase ube inani elifanele lokukhokha uma kuqhathaniswa nethuba lokukhuphuka kwendawo noma ukuvuza okuyimfihlo phakathi kwabaqashi.

Emafini angasese noma ezindaweni ezinama-VM ahlanganisiwe, qinisa imikhawulo ye ubumbano kanye nokuzihlukanisa, futhi kunciphisa ukuvezwa kwezimfihlo zenani eliphezulu enkumbulweni lapho kusolwa ukuhlala ndawonye okungathenjwa. Lokhu kuhambisana nemithetho yokuqapha kanye nezimpendulo zamaphethini okufinyelela kwimemori ngendlela exakile.

Ekugcineni, hlala ubukele ikusasa izibuyekezo yezinga (isb., i-PRAC) kanye nomsebenzi wabakhiqizi ukuhlanganisa ukuvikela okusekelwe ekubenilwa kwemigqa kanye nezinqubomgomo zokuvuselela eziguquguqukayo. I-Phoenix ikhombisa ukuthi, ngaphandle kwalokhu kugxuma kwekhwalithi, imboni izoqhubeka nokudlala ikati negundane ngokusha ngakunye ukuhlukahluka yephethini.

Nakuba i-vector eyinhloko ingeyasendaweni (AV:L ku-CVSS v3), umthelela wobuqotho uphezulu futhi iwindi lokuxhashazwa lifushane, nobufakazi bokukhuphukela ezimpandeni, ukwebiwa kokhiye be-RSA-2048 kanye ukukhohlisa kabanambambili ababucayi. Ukuhlanganisa ukuqina okusheshayo, ukuhlolwa okulawulwayo, nokuqapha amapheshana, namuhla, isu elinengqondo kakhulu.

Icala lasePhoenix ligqamisa ukuthi lincane kangakanani ukungafani esu lesampula le-TRR lingonakalisa ukuzivikela okuqinile ngokombono. Ngokuvumelanisa okuzilungisayo, amaphethini e-tREFI angu-128 kanye no-2608, ukufana kwebhange, nokuqondanisa kokuvuselela ngokucophelela (oku-2 kuphela kwezingu-128 ezisebenzayo ezivumelekile, okuphakamisa amathuba okuba abe ngu-25% lapho kuxhashazwa amabhange amane ngesikhathi esisodwa), lokhu kuhlasela kuhlanganisa ukuthi i-DDR5 ayimelene nechweba eliphephile ngokuzenzakalelayo. Phakathi kwamandla emiphumela yokuhlola, ukuba nokwenzeka kokuxhashazwa kokuphela kuye ekupheleni ngamaminithi, kanye nezindleko ezithengekayo zokunciphisa isikhashana (3× ukuvuselela), umlayezo wamaqembu ezobuchwepheshe ucacile: kufanelekile ukuthatha isinyathelo manje, ngaphandle kokulinda izixazululo eziphelele, kuyilapho uphusha imboni ukuthi ihlanganise ukuzivikela izimiso njenge-PRAC kanye nezinqubomgomo ezintsha, zokuvuselela ezihlakaniphile.