CVE-2026-47104

Description

libusb before version 1.0.30 contains a one-byte out-of-bounds read vulnerability in parse_iad_array() in descriptor.c that allows attackers to trigger a denial of service by supplying a malformed USB descriptor whose bLength equals size minus one, causing the bounds check to use the original buffer size instead of the remaining size. Attackers in virtualized environments with USB passthrough can supply crafted descriptors through libusb_get_active_interface_association_descriptors or libusb_get_interface_association_descriptors to read one byte past the end of the malloc allocation, resulting in a denial of service.

References

https://www.vulncheck.com/advisories/libusb-out-of-bounds-read-in-parse-iad-array

https://github.com/libusb/libusb/releases/tag/v1.0.30

https://github.com/libusb/libusb/pull/1814

https://github.com/libusb/libusb/issues/1813

https://github.com/libusb/libusb/commit/578ab76b4c434f8b204137ab6d7310689c7a9704

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4