Wata ƙungiyar masu bincike daga Jami'ar Toronto ta ƙirƙiro harin GPUBreach, wanda, kamar hare-haren GDDRHammer da GeForge da aka sanar kwanan nan, yana amfani da dabarar RowHammer don lalata ƙananan ƙwaƙwalwar bidiyo na GDDR da lalata teburin shafin ƙwaƙwalwar GPU. GPUBreach yana ba da damar shiga tushen zuwa babban yanayin tsarin ta hanyar aiwatar da ƙwayar CUDA mara gata akan GPU na NVIDIA.
Wani fasali na musamman na harin shine ikonsa na aiki tare da IOMMU da aka kunna. Don kauce wa IOMMU, harin yana lalata yanayin direban kernel na NVIDIA kuma yana fara kwararar buffer, yana sake rubuta abubuwan da ke cikin tsarin kernel. Hakanan ana nuna harin ta amfani da ɗakin karatu na cuPQC don cire maɓallan ɓoyewa daga ƙwaƙwalwar GPU, yana haɓaka lissafin ɓoyewa ta hanyar sauke su zuwa GPU.
source: budenet.ru
