Serial Blockage in Qualcomm Platforms Affects Linux Kernel Performance

CVE-2025-40108

What is CVE-2025-40108?

A significant vulnerability was identified in the Linux kernel associated with the qcom-geni serial driver. This issue resulted in blocked tasks during the normal boot process on Qualcomm platforms, specifically the RB1 board (QRB2210). The root cause stemmed from a flawed commit that enabled PM runtime, which led to tasks becoming unresponsive for extended periods. The problem was first reported on August 12, and despite attempts to resolve it, the initial patches failed. This situation underscores the importance of continuous monitoring and reliable fixes for kernel drivers to ensure stable system performance.

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