CVE-2023-37453Public exploit

System crash via USB descriptor race

Published Jul 6, 2023 · Updated May 5, 2025

An out-of-bounds read in the Linux kernel USB subsystem through 6.4.2 allows physically proximate attackers to crash the system. A race in hub_port_init overwrites udev->descriptor while descriptors_read traverses configuration descriptors, causing a read beyond the allocated array. Exploitation requires presenting a crafted USB device while descriptor enumeration and a sysfs descriptor read overlap; the documented consequence is a kernel crash.

CVSS severity4.6
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the Linux kernel USB subsystem through 6.4.2 allows physically proximate attackers to crash the system. A race in hub_port_init overwrites udev->descriptor while descriptors_read traverses configuration descriptors, causing a read beyond the allocated array. Exploitation requires presenting a crafted USB device while descriptor enumeration and a sysfs descriptor read overlap; the documented consequence is a kernel crash.

The record

CVE
CVE-2023-37453
Published
Jul 6, 2023
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1499.004, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2023CVE publishedPublication date reported by the CVE source.
  2. May 5, 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?

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

4.6CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.6NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Endpoint Denial of Service: Application or System Exploitation
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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