CVE-2025-68332

Kernel warning via invalid PNP unregistration

Published Dec 22, 2025 · Updated Dec 22, 2025

A driver lifecycle flaw in the Linux c6xdigio driver allows local users to trigger a kernel warning through a Comedi ioctl. c6xdigio_attach() can fail before PNP registration or ignore a registration failure, while c6xdigio_detach() still passes the unregistered driver to pnp_unregister_driver(). Reachability requires the c6xdigio low-level driver and a Comedi attach or detach path; the published trace establishes a warning, not data access or code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A driver lifecycle flaw in the Linux c6xdigio driver allows local users to trigger a kernel warning through a Comedi ioctl. c6xdigio_attach() can fail before PNP registration or ignore a registration failure, while c6xdigio_detach() still passes the unregistered driver to pnp_unregister_driver(). Reachability requires the c6xdigio low-level driver and a Comedi attach or detach path; the published trace establishes a warning, not data access or code execution.

The record

CVE
CVE-2025-68332
Published
Dec 22, 2025
Updated
Dec 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 22, 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=2.6.30
  2. Affected versionversion=2c89e159cd2f386285e9522d6476dd7e801bee22 <698149d797d0178162f394c55d4ed52aa0e0b7f6
  3. Affected versionversion=2c89e159cd2f386285e9522d6476dd7e801bee22 <72262330f7b3ad2130e800cecf02adcce3c32c77
  4. Affected versionversion=2c89e159cd2f386285e9522d6476dd7e801bee22 <888f7e2847bcb9df8257e656e1e837828942c53b
  5. Affected versionversion=2c89e159cd2f386285e9522d6476dd7e801bee22 <9fd8c8ad35c8d2390ce5ca2eb523c044bebdc072

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=2c89e159cd2f386285e9522d6476dd7e801bee22 <698149d797d0178162f394c55d4ed52aa0e0b7f6; version=2c89e159cd2f386285e9522d6476dd7e801bee22 <72262330f7b3ad2130e800cecf02adcce3c32c77; version=2c89e159cd2f386285e9522d6476dd7e801bee22 <888f7e2847bcb9df8257e656e1e837828942c53b; version=2c89e159cd2f386285e9522d6476dd7e801bee22 <9fd8c8ad35c8d2390ce5ca2eb523c044bebdc072

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)
Vectorlocal
PrivilegesUnavailable
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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