In the Driver GPU Intel (i915) identified vulnerability ( cve-2022-4139 ), which can lead to damage to the memory or leakage of data from the nucleus memory. The problem manifests itself as Linux 5.4 and affects the integrated and discrete GPU Intel 12 generations, including the Tiger Lake, Rocket Lake, Alder Lake, Raptor Lake, DG2, Arctic Sound and Meteor Lake.
The problem is caused by a logical error, due to which the video detective incorrectly drops the TLB buffer from the GPU on some equipment. In certain cases, the TLB discharge did not occur at all.
An incorrect discharge of TLB buffers can lead to the possibility of processing the process using GPU to the pages of physical memory that do not belong to this process, which can be used to read other people’s data or damage to memory in an extraneous process. It has not yet been determined whether it is possible to use vulnerability for aiming memory damage in the desired addresses.