Linus Torvalds adafuna kufalitsa kutulutsidwa kwa kernel Linux 6.13 ikuyembekezeka kuyamba Lamlungu lino, koma kuyesa nthambi ya 6.13 mwina kudzakulitsidwa ndi sabata imodzi chifukwa cha mavuto okhazikika ndi kusintha komwe kunakonzedwa ndi wantchito wa Microsoft ndikuvomerezedwa ku nthambi ya 6.13 mu Novembala. Zadziwikanso kuti chigamba chomwe chinayambitsa ngoziyi chinaperekedwa mwanjira yosayenera—chinalandiridwa ngakhale kuti sichinalandire chivomerezo chilichonse (ACK) kuchokera kwa oyang'anira zomangamanga a x86, zomwe ndi kuphwanya machitidwe ovomerezeka.
Chigambacho chinawonjezera kuthekera kogwiritsa ntchito masamba akulu amakumbukiro mu ROX (Read Only Execute) pogawa kukumbukira komwe kumapangidwira kuti kukhale ndi nambala yotheka. ROX imalola kukumbukira komwe kuli ndi code yotheka kugwiritsidwa ntchito powerenga-pokha, zomwe zimapangitsa kuti zikhale zovuta kugwiritsa ntchito zovuta zina. Mu kernel 6.13, ma code otheka a ma module pa x86_64 machitidwe adathandizidwa mwachisawawa kuti agwiritse ntchito nkhokwe yamasamba akulu okumbukiridwa, owonetsedwa ngati ROX. Kusinthako kunathetsa vutolo ndi masamba opangira mapu mu ROX mode kuti athetsedwe omwe anali asanakhazikitsidwe mokwanira ndipo zinapangitsa kuti zitheke kupeŵa kubweza kwakanthawi masamba a ROX m'njira yolembera mpaka ma module a kernel atakonzekera ntchito.
Pamapeto omaliza kuyesa kernel 6.13, injiniya wochokera ku Intel adazindikira glitch yomwe idalepheretsa kernel kudzuka bwino pamalaputopu ena okhala ndi ma processor a Intel (mwachitsanzo, okhala ndi ma CPU otengera Alderlake microarchitecture). Kulephera kunachitika pamene kernel idapangidwa ndi Clang compiler yokhala ndi CFI (Control Flow Integrity) njira yotetezera, yomwe imalepheretsa kuphwanya dongosolo lanthawi zonse (control flow) chifukwa chogwiritsa ntchito zinthu zomwe zimasintha zolozera zomwe zimasungidwa mkati. kukumbukira. Monga yankho lakanthawi, osamalira kuchokera ku Intel ndi AMD, omwe ali ndi udindo wopanga x86, adaganiza zoletsa kugwiritsa ntchito EXECMEM_ROX mu kernel ya 6.13 mpaka chigamba chonse chomwe chimathetsa vutoli chikonzekere ndikuyesedwa (kukonza koyamba sikunathetse vuto).
Source: opennet.ru
