Rashin lahani a cikin VMM hypervisor wanda OpenBSD ya haɓaka ba a daidaita shi gaba ɗaya ba

Bayan nazarin aikin OpenBSD da aka saki gyare-gyare rauni a cikin VMM hypervisor, gano makon da ya gabata, mai binciken da ya gano matsalar
ya yanke hukuncicewa facin da aka samarwa ga masu amfani baya gyara matsalar. Mai binciken ya nuna cewa matsalar ba ta faruwa saboda ci gaba da rarraba adiresoshin jiki na baƙi (GPA), da kuma adiresoshin jiki (HPA). Lokacin da tsarin shafi na ƙwaƙwalwar ajiya ya ratsa, tsarin baƙo na iya sake rubuta abubuwan da ke cikin yankunan ƙwaƙwalwar kernel na mahalli.

Maxim Villard ne ya gano raunin (Maxime Villard), marubucin tsarin bazuwar adireshin kernel da aka yi amfani da shi a cikin NetBSD (KASLR, Kernel Address Space Layout Randomization) da gyrevisor NVMM.

source: budenet.ru