CVE-2026-47104
Published: June 2, 2026Last modified: June 16, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libusb | Not affected (1.0.26-r0) |
| 25 LTS | libusb | Fixed (1.0.28-r1) | |
| Stream | libusb | Fixed (1.0.30-r0) |
References
- https://github.com/libusb/libusb/commit/578ab76b4c434f8b204137ab6d7310689c7a9704
- https://github.com/libusb/libusb/issues/1813
- https://github.com/libusb/libusb/pull/1814
- https://github.com/libusb/libusb/releases/tag/v1.0.30
- https://www.vulncheck.com/advisories/libusb-out-of-bounds-read-in-parse-iad-array