Kusagadzikana (CVE-915-2022) kwakaonekwa muIntel GPU mutyairi (i4139) izvo zvinogona kutungamira kuhuwori hwekurangarira kana kudonha kwedata kubva kukernel memory. Nyaya iyi inoratidzika kutanga neLinux kernel 5.4 uye inobata chizvarwa chechigumi nembiri Intel yakabatanidzwa uye discrete GPUs, kusanganisira iyo Tiger Lake, Rocket Lake, Alder Lake, DG12, Raptor Lake, DG1, Arctic Sound, uye Meteor Lake mhuri.
Nyaya iyi inokonzereswa nekukanganisa kwepfungwa kunoita kuti mutyairi wevhidhiyo aite zvisizvo maTLB padivi reGPU pane imwe hardware. Mune zvimwe zviitiko, iyo TLB reset haina kuitika zvachose. Kutsvedza zvisirizvo kweTLB buffers kunogona kutungamira kune mukana wekuita maitiro uchishandisa iyo GPU yekuwana mapeji ekurangarira emuviri asiri eiyo maitiro akapihwa, ayo anogona kushandiswa kuverenga yekunze data kana huwori ndangariro mune yekune dzimwe nyika maitiro. Izvo hazvisati zvaonekwa kuti kusazvibata kunogona kushandiswa kunanga huwori hwendangariro pamakero anodiwa.
Source: opennet.ru