CVE-2023-54213

Kernel warning via unchecked USB endpoints

Published Dec 30, 2025 · Updated Dec 30, 2025

Improper endpoint validation in affected Linux kernels allows physically proximate attackers to trigger a kernel warning via a crafted USB device. The sisusb_probe path begins graphics-device initialization without verifying that every required endpoint exists and is a bulk endpoint, causing usb_submit_urb to receive an incompatible pipe type. Exploitation requires presenting a malformed USB interface to a system using the sisusbvga driver; the documented consequence is a warning during device initialization, not code execution or data access.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper endpoint validation in affected Linux kernels allows physically proximate attackers to trigger a kernel warning via a crafted USB device. The sisusb_probe path begins graphics-device initialization without verifying that every required endpoint exists and is a bulk endpoint, causing usb_submit_urb to receive an incompatible pipe type. Exploitation requires presenting a malformed USB interface to a system using the sisusbvga driver; the documented consequence is a warning during device initialization, not code execution or data access.

The record

CVE
CVE-2023-54213
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0f9028b6ffaa98bff7c479cccf2558247e295534
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <43f569fd0699c4240a5c96e5ba1a0844a595afca
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a730feb672c7d7c5f7414c3715f8e3fa844e5a9b
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a8f980ecb0112100366c64e0404d9dd1dcbd2fcd
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bccb2ccb65515dc66a8001f99f4dcba8a45987f9
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ccef03c5113506d27dd6530d3a9ef5715c068e13
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d5dba4b7bf904143702fb4be641802ee2e9c95aa
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df05a9b05e466a46725564528b277d0c570d0104

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0f9028b6ffaa98bff7c479cccf2558247e295534; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <43f569fd0699c4240a5c96e5ba1a0844a595afca; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a730feb672c7d7c5f7414c3715f8e3fa844e5a9b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a8f980ecb0112100366c64e0404d9dd1dcbd2fcd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bccb2ccb65515dc66a8001f99f4dcba8a45987f9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ccef03c5113506d27dd6530d3a9ef5715c068e13; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d5dba4b7bf904143702fb4be641802ee2e9c95aa; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df05a9b05e466a46725564528b277d0c570d0104

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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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