Security vulnerabilities and automated fixes for usb hid issues
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A critical buffer overflow vulnerability was discovered and patched in the Windows USB HID host library, where four unsafe `memcpy` calls copied data using device-reported sizes without validating destination buffer capacity. The most dangerous instance could overflow a heap buffer by as little as one byte — enough to corrupt heap metadata and potentially allow arbitrary code execution. This post breaks down how the vulnerability works, why it matters, and how to write safer memory operations in