CVE-2023-54283

Inconsistent BPF LRU reference state via data race

Published Dec 30, 2025 · Updated Dec 30, 2025

A race condition in the BPF LRU list in affected Linux kernel versions allows local users to produce inconsistent node reference state. Concurrent map-update and list-rotation paths access node->ref without READ_ONCE and WRITE_ONCE synchronization, allowing its value to change across the read and write. Triggering requires concurrent updates to an affected BPF per-CPU LRU hash map; published material reports a KCSAN warning and inaccurate reference state but no concrete confidentiality, integrity, or availability consequence.

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

What happened

A race condition in the BPF LRU list in affected Linux kernel versions allows local users to produce inconsistent node reference state. Concurrent map-update and list-rotation paths access node->ref without READ_ONCE and WRITE_ONCE synchronization, allowing its value to change across the read and write. Triggering requires concurrent updates to an affected BPF per-CPU LRU hash map; published material reports a KCSAN warning and inaccurate reference state but no concrete confidentiality, integrity, or availability consequence.

The record

CVE
CVE-2023-54283
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 <6e5e83b56f50fbd1c8f7dca7df7d72c67be25571
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6eaef1b1d8720053eb1b6e7a3ff8b2ff0716bb90
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <819ca25444b377935faa2dbb0aa3547519b5c80f
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a89d14410ea0352420f03cddc67e0002dcc8f9a5
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b6d9a4062c944ad095b34dc112bf646a84156f60
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c006fe361cfd947f51a56793deddf891e5cbfef8
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e09a285ea1e859d4cc6cb689d8d5d7c1f7c7c0d5
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ee9fd0ac3017c4313be91a220a9ac4c99dde7ad4

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6e5e83b56f50fbd1c8f7dca7df7d72c67be25571; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6eaef1b1d8720053eb1b6e7a3ff8b2ff0716bb90; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <819ca25444b377935faa2dbb0aa3547519b5c80f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a89d14410ea0352420f03cddc67e0002dcc8f9a5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b6d9a4062c944ad095b34dc112bf646a84156f60; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c006fe361cfd947f51a56793deddf891e5cbfef8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e09a285ea1e859d4cc6cb689d8d5d7c1f7c7c0d5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ee9fd0ac3017c4313be91a220a9ac4c99dde7ad4

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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