CVE-2026-23045

Lock assertion via unlocked devlink parameter update

Published Feb 4, 2026 · Updated Feb 4, 2026

Missing locking in the ENA driver in Linux Kernel 6.17 triggers a devlink lock assertion while configuring PHC parameters. The ena_devlink_configure_params and ena_devlink_disable_phc_param paths call devl_param_driverinit_value_set without holding devl_lock; the patch brackets both calls with devl_lock and devl_unlock. The published record demonstrates a lockdep warning during ena_probe but identifies no attacker-controlled trigger or consequence beyond the warning.

CVSS severityUnavailable
Unscored
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

Missing locking in the ENA driver in Linux Kernel 6.17 triggers a devlink lock assertion while configuring PHC parameters. The ena_devlink_configure_params and ena_devlink_disable_phc_param paths call devl_param_driverinit_value_set without holding devl_lock; the patch brackets both calls with devl_lock and devl_unlock. The published record demonstrates a lockdep warning during ena_probe but identifies no attacker-controlled trigger or consequence beyond the warning.

The record

CVE
CVE-2026-23045
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record 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=6.17
  2. Affected versionversion=816b52624cf6a03ea541956b448025d844a8287d <8da901ffe497a53fa4ecc3ceed0e6d771586f88e
  3. Affected versionversion=816b52624cf6a03ea541956b448025d844a8287d <f2c4bcfa193eef1b7457a56be9c47a8de015f225

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.17; version=816b52624cf6a03ea541956b448025d844a8287d <8da901ffe497a53fa4ecc3ceed0e6d771586f88e; version=816b52624cf6a03ea541956b448025d844a8287d <f2c4bcfa193eef1b7457a56be9c47a8de015f225

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.

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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)
VectorUnavailable
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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