Ithimba labacwaningi abavela eNyuvesi yaseToronto bathuthukise ukuhlasela kwe-GPUBreach, okufana nokuhlasela kwe-GDDRHammer kanye ne-GeForge okumenyezelwe muva nje, okusebenzisa indlela ye-RowHammer ukonakalisa ama-bits ememori yevidiyo ye-GDDR kanye nokulimaza ithebula lekhasi lememori ye-GPU. I-GPUBreach ivumela ukufinyelela kwezimpande endaweni eyinhloko yesistimu ngokusebenzisa i-kernel ye-CUDA engenamalungelo ku-NVIDIA GPU.
Isici esiyingqayizivele salolu hlaselo yikhono lalo lokusebenza nge-IOMMU evuliwe. Ukuze kudlule i-IOMMU, uhlaselo lonakalisa isimo somshayeli we-kernel oyimfihlo we-NVIDIA futhi luqale ukugcwala kwe-buffer, lubhala ngaphezulu okuqukethwe kwezakhiwo ze-kernel. Uhlaselo luphinde luboniswe kusetshenziswa umtapo wezincwadi we-cuPQC ukukhipha okhiye bokubethela kwimemori ye-GPU, kusheshiswe ukubalwa kwe-cryptographic ngokuwalayisha ku-GPU.
Source: opennet.ru
