CVE-2024-38394Public exploit

Physical USB policy bypass via mismatched device matching

Published Jun 15, 2024 · Updated Nov 12, 2024

Authorization bypass in GNOME Settings Daemon through 46.0 allows physically proximate attackers to access unintended Linux USB functionality. The USB protection manager authorizes devices advertising only HID or hub classes, while the kernel can bind drivers by attacker-controlled vendor and product IDs. Physical insertion of a crafted device into a GNOME Linux host with USBGuard protection enables otherwise blocked drivers, including mass-storage and device-specific kernel modules.

CVSS severity4.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in GNOME Settings Daemon through 46.0 allows physically proximate attackers to access unintended Linux USB functionality. The USB protection manager authorizes devices advertising only HID or hub classes, while the kernel can bind drivers by attacker-controlled vendor and product IDs. Physical insertion of a crafted device into a GNOME Linux host with USBGuard protection enables otherwise blocked drivers, including mass-storage and device-specific kernel modules.

The record

CVE
CVE-2024-38394
Published
Jun 15, 2024
Updated
Nov 12, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1200Hardware Additions

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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