CVE-2026-47104

Name	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libusb-1.0 (PTS)	bullseye	2:1.0.24-3	vulnerable
	bookworm	2:1.0.26-1	vulnerable
	trixie	2:1.0.28-1	vulnerable
	forky, sid	2:1.0.30-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libusb-1.0	source	(unstable)	2:1.0.30-1

Notes

[trixie] - libusb-1.0 <no-dsa> (Minor issue)
[bookworm] - libusb-1.0 <no-dsa> (Minor issue)
https://github.com/libusb/libusb/issues/1813
https://github.com/libusb/libusb/pull/1814
https://github.com/libusb/libusb/commit/bc0886173ea15b8cc9bba2918f58a97a7f185231 (v1.0.30-rc2)