CVE-2025-21992

Local system hang via nonfunctional HID sensor

Published Apr 2, 2025 · Updated May 11, 2026

Denial of service in affected Linux kernels allows local users to hang the system by querying an HP 5MP Camera sensor through iio_info. The camera reports an unimplemented HID sensor that hid-sensor-hub exposes, causing runtime power management to wait on an unresponsive interface. Exploitation requires local low-privileged access and the physical camera to be connected; the resulting condition hangs the system.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected Linux kernels allows local users to hang the system by querying an HP 5MP Camera sensor through iio_info. The camera reports an unimplemented HID sensor that hid-sensor-hub exposes, causing runtime power management to wait on an unresponsive interface. Exploitation requires local low-privileged access and the physical camera to be connected; the resulting condition hangs the system.

The record

CVE
CVE-2025-21992
Published
Apr 2, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 2, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record 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?

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

  1. Affected versionversion=6.3
  2. Affected versionversion=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <363236d709e75610b628c2a4337ccbe42e454b6d
  3. Affected versionversion=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <6ca3d4d87af406a390a34ea924ab65c517e6e132
  4. Affected versionversion=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <7a7ada33879a631b05b536e66d1c5b1219d3bade
  5. Affected versionversion=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <920ea73215dbf948b661b88a79cb47b7f96adfbd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <363236d709e75610b628c2a4337ccbe42e454b6d; version=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <6ca3d4d87af406a390a34ea924ab65c517e6e132; version=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <7a7ada33879a631b05b536e66d1c5b1219d3bade; version=e04955db6a7c3fc4a1e6978649b61a6f5f8028e3 <920ea73215dbf948b661b88a79cb47b7f96adfbd

Published CVSS scores

5.5NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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