CVE-2023-54177

Kernel warning via stale quota-state assertion

Published Dec 30, 2025 · Updated Dec 30, 2025

Race condition in Linux kernel quota handling allows local users to trigger a kernel warning during concurrent quota reconfiguration. During quota resume and a concurrent writable file open, invalidate_dquots calls dqgrab even though DQ_ACTIVE_B is legitimately clear, so its assertion emits WARN_ON_ONCE. Reaching the path requires privileged ext4 quota reconfiguration and a narrow concurrency window; the published consequence is limited to the warning.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Linux kernel quota handling allows local users to trigger a kernel warning during concurrent quota reconfiguration. During quota resume and a concurrent writable file open, invalidate_dquots calls dqgrab even though DQ_ACTIVE_B is legitimately clear, so its assertion emits WARN_ON_ONCE. Reaching the path requires privileged ext4 quota reconfiguration and a narrow concurrency window; the published consequence is limited to the warning.

The record

CVE
CVE-2023-54177
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

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 <3f378783c47b5749317ea008d8c931d6d3986d8f
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <579d814de87c3cac69c9b261efa165d07cde3357
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6432843debe1ec7d76c5b2f76c67f9c5df22436e
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6478eabc92274efae6269da7c515ba2b4c8e88d8
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6f4e543d277a12dfeff027e6ab24a170e1bfc160
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <965bad2bf1afef64ec16249da676dc7310cca32e
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cbaebbba722cb9738c55903efce11f51cdd97bee
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6a95db3c7ad160bc16b89e36449705309b52bcb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3f378783c47b5749317ea008d8c931d6d3986d8f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <579d814de87c3cac69c9b261efa165d07cde3357; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6432843debe1ec7d76c5b2f76c67f9c5df22436e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6478eabc92274efae6269da7c515ba2b4c8e88d8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6f4e543d277a12dfeff027e6ab24a170e1bfc160; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <965bad2bf1afef64ec16249da676dc7310cca32e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cbaebbba722cb9738c55903efce11f51cdd97bee; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6a95db3c7ad160bc16b89e36449705309b52bcb

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)
Vectorlocal
Privilegesadmin
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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