Race Condition in Linux Kernel Leading to Device Probing Issues

CVE-2022-50202

What is CVE-2022-50202?

A critical race condition in the Linux kernel can cause device probing to hang indefinitely during resumption from hibernation. This occurs when the probe_count variable does not decrement to zero under specific circumstances, such as when a device stops responding or when multiple device probe requests are made simultaneously. The patch implemented aims to defer the waiting mechanism for device probing to mitigate potential deadlocks caused by blocked operations, particularly those involving USB emulation. However, the underlying issues related to unresponsive devices and simultaneous probe requests remain unaddressed, potentially leading to data loss.

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