Chiwopsezo (CVE-915-2022) chadziwika mu dalaivala wa Intel GPU (i4139) chomwe chingayambitse kuwonongeka kwamakumbukiro kapena kutayikira kwa data kuchokera ku kernel memory. Nkhaniyi ikuwoneka kuyambira pa Linux kernel 5.4 ndipo ikukhudza 12th generation Intel integrated and discrete GPUs, kuphatikizapo Tiger Lake, Rocket Lake, Alder Lake, DG1, Raptor Lake, DG2, Arctic Sound, ndi mabanja a Meteor Lake.
Vutoli limayambitsidwa ndi cholakwika chamalingaliro chomwe chimapangitsa woyendetsa kanemayo kusuntha molakwika ma TLBs kumbali ya GPU pazida zina. Nthawi zina, kukonzanso kwa TLB sikunachitike konse. Kuthamanga kolakwika kwa ma buffers a TLB kungayambitse kuthekera kwa njira yogwiritsira ntchito GPU kupeza masamba okumbukira omwe sali a ndondomeko yomwe yaperekedwa, yomwe ingagwiritsidwe ntchito kuwerengera deta yakunja kapena kukumbukira kukumbukira kunja. Sizinadziwikebe ngati chiwopsezocho chingagwiritsidwe ntchito kulimbana ndi ziphuphu zamakumbukiro pama adilesi omwe mukufuna.
Source: opennet.ru