Dambudziko (CVE-2022-4139) rakawanikwa muIntel GPU driver (i915) iro rinogona kukonzera kuora kwememori kana kubuda kwedata kubva mukernel memory. Dambudziko iri rinotanga kubva mukernel. Linux 5.4 uye inokanganisa maGPU echizvarwa chegumi nembiri eIntel akabatanidzwa uye akasiyana, anosanganisira Tiger Lake, Rocket Lake, Alder Lake, DG1, Raptor Lake, DG2, Arctic Sound, uye mhuri dzeMeteor Lake.
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
