CVE-2025-40016

Kernel warning via invalid UVC entity IDs

Published Oct 20, 2025 · Updated Oct 20, 2025

Improper UVC entity handling in Linux 5.7 and later allows physically proximate attackers to trigger kernel warnings via a crafted USB camera. The uvcvideo parser accepts zero or duplicate unit and terminal IDs, so entity lookup can resolve an output unit to itself or later use an entity with invalid pads while building the media graph. Physical attachment or equivalent control of a UVC device is required, and the documented consequence is a kernel warning during device probing rather than a confirmed crash.

CVSS severity7.0
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper UVC entity handling in Linux 5.7 and later allows physically proximate attackers to trigger kernel warnings via a crafted USB camera. The uvcvideo parser accepts zero or duplicate unit and terminal IDs, so entity lookup can resolve an output unit to itself or later use an entity with invalid pads while building the media graph. Physical attachment or equivalent control of a UVC device is required, and the documented consequence is a kernel warning during device probing rather than a confirmed crash.

The record

CVE
CVE-2025-40016
Published
Oct 20, 2025
Updated
Oct 20, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1200
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 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=5.7
  2. Affected versionversion=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <000b2a6bed7f30e0aadfb19bce9af6458d879304
  3. Affected versionversion=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <0e2ee70291e64a30fe36960c85294726d34a103e
  4. Affected versionversion=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <0f140cede24334b3ee55e3e1127071266cbb8287
  5. Affected versionversion=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <15c0e136bd8cd70a1136a11c7876d6aae0eef8c8
  6. Affected versionversion=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <f617d515d66c05e9aebc787a8fe48b7163fc7b70

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <000b2a6bed7f30e0aadfb19bce9af6458d879304; version=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <0e2ee70291e64a30fe36960c85294726d34a103e; version=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <0f140cede24334b3ee55e3e1127071266cbb8287; version=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <15c0e136bd8cd70a1136a11c7876d6aae0eef8c8; version=a3fbc2e6bb05a3b1ea341cd29dea09b4a033727b <f617d515d66c05e9aebc787a8fe48b7163fc7b70

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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)
Vectorphysical
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1200Hardware Additions

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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