Tegra GPU Register Map Initialization Flaw in Linux Kernel

Executive Summary

This vulnerability in the Linux kernel involves improper initialization of address registers in the drm/tegra module for gr2d and gr3d components. The host1x_client_register() function is called before the register map is initialized, allowing userspace to submit jobs before the device is properly set up. This could lead to race conditions or unexpected behavior.

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Detection Guidance

This vulnerability is specific to the Linux kernel's drm/tegra driver and involves improper initialization of address registers before the HOST1X client is registered. Detection requires checking the kernel version and examining the drm/tegra driver initialization sequence.

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Impact Analysis

This vulnerability may allow local users to execute arbitrary code or cause a denial of service by exploiting the race condition during device initialization. It could lead to system instability or unauthorized access if exploited.

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Mitigation Strategies

Update the Linux kernel to a patched version where the register initialization is moved before host1x client registration to prevent userspace from submitting jobs prematurely.

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