CVE-2023-54102

Kernel memory corruption via oversized debugfs write

Published Dec 24, 2025 · Updated Dec 24, 2025

Stack-based buffer overflow in Linux lpfc debugfs allows local users to overwrite kernel memory through an oversized lockstat write. lpfc_debugfs_lockstat_write() passes an attacker-controlled byte count to copy_from_user() without limiting it to the fixed mybuf array. The local, low-privilege path requires a reachable lpfc debugfs entry, and successful corruption exposes kernel confidentiality, integrity, and availability.

CVSS severity7.0
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Linux lpfc debugfs allows local users to overwrite kernel memory through an oversized lockstat write. lpfc_debugfs_lockstat_write() passes an attacker-controlled byte count to copy_from_user() without limiting it to the fixed mybuf array. The local, low-privilege path requires a reachable lpfc debugfs entry, and successful corruption exposes kernel confidentiality, integrity, and availability.

The record

CVE
CVE-2023-54102
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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 <644a9d5e22761a41d5005a26996a643da96de962
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a9df88cb31dcbd72104ec5883f35cbc1fb587e47
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ad050f6cf681ebb850a9d4bc19474d3896476301
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c6087b82a9146826564a55c5ca0164cac40348f5
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e0e7faee3a7dd6f51350cda64997116a247eb045
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f91037487036e2d2f18d3c2481be6b9a366bde7f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <644a9d5e22761a41d5005a26996a643da96de962; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a9df88cb31dcbd72104ec5883f35cbc1fb587e47; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ad050f6cf681ebb850a9d4bc19474d3896476301; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c6087b82a9146826564a55c5ca0164cac40348f5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e0e7faee3a7dd6f51350cda64997116a247eb045; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f91037487036e2d2f18d3c2481be6b9a366bde7f

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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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