CVE-2023-54244

Kernel oops via unflushed ACPI query workqueue

Published Dec 30, 2025 · Updated Dec 30, 2025

Race condition in the Linux kernel ACPI EC driver allows attackers to trigger a kernel oops during custom query handler removal. acpi_ec_remove_query_handler() unlinks a handler without flushing ec_query_wq, so pending work can invoke its callback after the module code is unloaded. The race requires a custom ACPI EC query handler, pending query work, and unloading of its callback module; the resulting oops can interrupt the host.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Race condition in the Linux kernel ACPI EC driver allows attackers to trigger a kernel oops during custom query handler removal. acpi_ec_remove_query_handler() unlinks a handler without flushing ec_query_wq, so pending work can invoke its callback after the module code is unloaded. The race requires a custom ACPI EC query handler, pending query work, and unloading of its callback module; the resulting oops can interrupt the host.

The record

CVE
CVE-2023-54244
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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 <066b90bca755f0b876e7b027b75d1796861d6db0
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0d528a7c421b1f1772fc1d29370b3b5fc0f42b19
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <130e3eac51912f2c866e7d035992ede25f8feac0
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <86a159fd5bdb01ec34b160cfda1a313b616d9302
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ccae2233e9935a038a35fe8cfd703df905f700e7
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e5b492c6bb900fcf9722e05f4a10924410e170c1
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f4a573eed6377d356f835a4b00099d5dacee0da0
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fd2c99e81ae0dbdd62a154ef9c77fc01715cc020

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <066b90bca755f0b876e7b027b75d1796861d6db0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0d528a7c421b1f1772fc1d29370b3b5fc0f42b19; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <130e3eac51912f2c866e7d035992ede25f8feac0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <86a159fd5bdb01ec34b160cfda1a313b616d9302; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ccae2233e9935a038a35fe8cfd703df905f700e7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e5b492c6bb900fcf9722e05f4a10924410e170c1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f4a573eed6377d356f835a4b00099d5dacee0da0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fd2c99e81ae0dbdd62a154ef9c77fc01715cc020

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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