CVE-2023-53644

Local service interruption via unchecked USB endpoints

Published Oct 7, 2025 · Updated Oct 7, 2025

Improper USB endpoint validation in Linux allows local users to interrupt service through a crafted USB endpoint configuration. The radio-shark and radio-shark2 drivers use required endpoints without first confirming their presence and transfer types, causing shark_write_reg to submit an incompatible USB request. Exploitation requires local low-privileged access and an affected driver, and the documented consequence is limited to availability.

CVSS severity5.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper USB endpoint validation in Linux allows local users to interrupt service through a crafted USB endpoint configuration. The radio-shark and radio-shark2 drivers use required endpoints without first confirming their presence and transfer types, causing shark_write_reg to submit an incompatible USB request. Exploitation requires local low-privileged access and an affected driver, and the documented consequence is limited to availability.

The record

CVE
CVE-2023-53644
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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 <2b580d0f03c4fc00013cd08f9ed96b87a08fd0d9
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3ed6a312ac1e7278f92b1b3d95377b335ae21e89
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4c3057a1927fa0b9ed8948b6f3b56b4ff9fa63d3
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <53764a17f5d8f0d00b13297d06b5e65fa844288b
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <76e31045ba030e94e72105c01b2e98f543d175ac
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8a30dce9d7f70f8438956f6a01142b926c301334
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <afd72825b4fcb7ae4015e1c93b054f4c37a25684
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b1bde4b4360c3d8a35504443efabd3243b802805

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2b580d0f03c4fc00013cd08f9ed96b87a08fd0d9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3ed6a312ac1e7278f92b1b3d95377b335ae21e89; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4c3057a1927fa0b9ed8948b6f3b56b4ff9fa63d3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <53764a17f5d8f0d00b13297d06b5e65fa844288b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <76e31045ba030e94e72105c01b2e98f543d175ac; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8a30dce9d7f70f8438956f6a01142b926c301334; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <afd72825b4fcb7ae4015e1c93b054f4c37a25684; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b1bde4b4360c3d8a35504443efabd3243b802805

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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