Out-of-Bounds Read in Linux Kernel ASoC AMD AC-SDW-SOF

Executive Summary

This vulnerability is in the Linux kernel's ASoC subsystem for AMD's acp-sdw-sof driver. It involves a function called create_sdw_dailinks() that incorrectly iterates over an array called sof_dais. The function searches for an uninitialized entry but the array is allocated with exactly the number of entries needed. If all entries are initialized, the loop reads past the end of the array, causing a potential out-of-bounds memory access.

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Detection Guidance

This vulnerability is specific to the Linux kernel's ASoC AMD acp-sdw-sof driver and involves a buffer overflow due to improper array bounds checking. Detection requires checking the kernel version and driver code for the affected function create_sdw_dailinks(). No direct network detection commands are applicable.

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Impact Analysis

This vulnerability could lead to memory corruption or crashes in systems running affected Linux kernels. It may cause instability, unexpected behavior, or denial of service if exploited. Systems using AMD audio hardware with the affected driver could be particularly vulnerable.

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Compliance Impact

This vulnerability is a memory corruption issue in the Linux kernel's ASoC subsystem for AMD devices. It does not directly relate to data protection, privacy, or security controls typically addressed by GDPR or HIPAA. Compliance impact would depend on whether this flaw could be exploited to access or manipulate sensitive data, but no evidence suggests such a connection.

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Mitigation Strategies

Apply the Linux kernel patch that resolves the ASoC amd acp-sdw-sof issue by passing the correct entry count to create_sdw_dailinks() and preventing array overread.

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