Unknown
The libusb crate has not seen a release since September 2016, and its author is unresponsive. The rusb crate is a maintained fork: https://github.com/a1ien/rusb
Product
1 published CVE affecting crates.io libusb, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
Newest publication first
The libusb crate has not seen a release since September 2016, and its author is unresponsive. The rusb crate is a maintained fork: https://github.com/a1ien/rusb
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.