Use-After-Free Vulnerability in NVIDIA Tegra20 EMC Component

CVE-2024-58034

Summary

A use-after-free vulnerability has been identified in the NVIDIA Tegra20 EMC component within the Linux kernel. The issue arises in the function tegra_emc_find_node_by_ram_code(), where it inadvertently releases device nodes while they are still in use, which may lead to potential exploitation. The fix involves utilizing the for_each_child_of_node() macro and of_get_child_by_name() for better node management and to ensure the stability of operations related to the 'emc-tables' and 'lpddr2' nodes. This bug was uncovered through an experimental verification tool, reinforcing the importance of robust coding practices and thorough testing.

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