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TI-2026-19068 Aliases CVE-2026-23679GHSA-jp69-qvgm-mqwx

libusb < 1.0.30 NULL Pointer Dereference in parse_interface()

Priority MEDIUM 64CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
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. Impact type from CWE-125 and the CVSS impact.

Summary

libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array. Attackers can exploit this flaw through libusb_get_active_config_descriptor or libusb_get_config_descriptor by providing crafted descriptors via virtualized USB passthrough, file-based descriptor parsing, or network sources, causing any application iterating over endpoints to dereference a NULL endpoint pointer and crash.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00184 8th 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
Poc
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

VendorProductAffected versionsFixed inStatusSource
libusblibusbbefore 1.0.301.0.30Patch availableCNA
  • libusb Vendorlibusb Affected before 1.0.30 Fixed in 1.0.30 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:libusb:libusb:*:*:*:*:*:*:*:*before 1.0.30Vulnerablelibusb
  • 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 ·

    libusb 1.0.30

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-34703 libusb < 1.0.30 Out-of-Bounds Read in parse_iad_array()Priority LOW 22
    Show all 2 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:20075

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23679
  2. 2026-10-03 Alias added: GHSA-jp69-qvgm-mqwx

References

Patch 2

Other 2

  • TI-2026-34703 libusb < 1.0.30 Out-of-Bounds Read in parse_iad_array() CVSS 4.0MEDIUM 5.1

Sources

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