Kusagadzikana muVMM hypervisor yakagadziriswa neOpenBSD chirongwa

Mune iyo OpenBSD-inopihwa hypervisor VMM kuzivikanwa vulnerability, iyo inobvumira, kuburikidza nekugadzirisa padivi remuenzi system, kunyora pamusoro zviri mukati mendangariro nzvimbo dzekernel yenzvimbo yevaenzi. Dambudziko rinokonzerwa nenyaya yekuti chikamu chemuenzi kero (GPA, Guest Physical Kero) yakamepurwa kune kernel virtual kero nzvimbo (KVA), asi iyo GPA haina dziviriro yekunyora inoshandiswa kunzvimbo dzeKVA dzakatarwa kuverenga chete. . Nekuda kwekushaikwa kwecheki inodiwa mu evmm_update_pvclock() basa, zvinokwanisika kuendesa kero dzeKVA dzeiyo host system kune pmap kufona uye kunyora pamusoro zviri mukati mekernel memory.

Kwidziridzo: Vagadziri veOpenBSD vaburitsa chigamba kugadzirisa kusagadzikana.

Source: opennet.ru

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