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CVE-2020-11179

Status Candidate

Overview

This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Related Files

Qualcomm Adreno GPU Ringbuffer Corruption / Protected Mode Bypass
Posted Sep 8, 2020
Authored by Google Security Research, hawkes

The Qualcomm Adreno GPU shares a global mapping called a "scratch" buffer with the Adreno KGSL kernel driver. The contents of the scratch buffer can be overwritten by untrusted GPU commands. This results in a logic error in the Adreno driver's ringbuffer allocation code, which can be used to corrupt ringbuffer data. A race condition exists between the ringbuffer corruption and a GPU context switch, and this results in a bypass of the GPU protected mode setting. This ultimately means that an attacker can read and write arbitrary physical addresses from userland by running GPU commands while protected mode disabled, which results in arbitrary kernel code execution.

tags | exploit, arbitrary, kernel, code execution
advisories | CVE-2020-11179
MD5 | 1b8910b13d2d3595dcd217d98080e491
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