TI-2026-34703 Aliases CVE-2026-47104 GHSA-fh6g-r8pf-wqgw

libusb < 1.0.30 Out-of-Bounds Read in parse_iad_array()

LOW 22CWE-125Published 2026-05-27 · Updated 2026-11-08

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · None · Low
Fix status: Partial Red Hat: 1 fixed, 5 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0013 2nd percentileScored 2026-11-07

Fix Partial libusb (libusb): 1.0.30Red Hat: 1 advisoryRed Hat: 1 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
libusb	libusb	before 1.0.30	1.0.30	Patch available	CNA

libusb Vendorlibusb Affected before 1.0.30 Fixed in 1.0.30 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:libusb:libusb::::::::	before 1.0.30	Vulnerable	libusb

cpe:2.3:a:libusb:libusb:*:*:*:*:*:*:*:* Versions before 1.0.30 Vulnerable ·libusb

Remediation

Fix · CNA libusb (libusb) Fixed in 1.0.30

Red Hat 1 advisory

RHSA-2026:20075 Released 2026-05-21 · Red Hat rating Moderate
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images libusb1-1.0.30-1.hum1@aarch64, libusb1-1.0.30-1.hum1@src, libusb1-1.0.30-1.hum1@x86_64 +10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-05-27
libusb 1.0.30
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-19068 libusb < 1.0.30 NULL Pointer Dereference in parse_interface()Priority MEDIUM 64
Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat Hardened Images	Fixed	RHSA-2026:20075

Timeline

2026-10-02 Threatist record created from CVE-2026-47104
2026-10-03 Alias added: GHSA-fh6g-r8pf-wqgw

References

Patch 2

Other 2

TI-2026-19068 libusb < 1.0.30 NULL Pointer Dereference in parse_interface() CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences