CVE-2023-52524Public exploit

System crash via unlocked NFC device-list insertion

Published Mar 2, 2024 · Updated May 23, 2026

Improper locking in the Linux kernel NFC LLCP subsystem allows local users to corrupt the LLCP device list during device registration. nfc_llcp_register_device() calls list_add() on llcp_devices without holding llcp_devices_lock, allowing concurrent list modification. Triggering the race requires local low-privileged access and an NFC device-registration path; the demonstrated outcome is kernel list corruption and a crash.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux kernel NFC LLCP subsystem allows local users to corrupt the LLCP device list during device registration. nfc_llcp_register_device() calls list_add() on llcp_devices without holding llcp_devices_lock, allowing concurrent list modification. Triggering the race requires local low-privileged access and an NFC device-registration path; the demonstrated outcome is kernel list corruption and a crash.

The record

CVE
CVE-2023-52524
Published
Mar 2, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=425d9d3a92df7d96b3cfb7ee5c240293a21cbde3 <7562780e32b84196731d57dd24563546fcf6d082
  2. Affected versionversion=5.10.188 <5.10.198
  3. Affected versionversion=5.15.121 <5.15.135
  4. Affected versionversion=5.4.251 <5.4.258
  5. Affected versionversion=6.1.39 <6.1.57
  6. Affected versionversion=6.3.13 <6.4
  7. Affected versionversion=6.4.4 <6.5
  8. Affected versionversion=6.5
  9. Affected versionversion=6709d4b7bc2e079241fdef15d1160581c5261c10 <29c16c2bf5866326d5fbc4a537b3997fcac23391
  10. Affected versionversion=6709d4b7bc2e079241fdef15d1160581c5261c10 <dfc7f7a988dad34c3bf4c053124fb26aa6c5f916
  11. Affected versionversion=96f2c6f272ec04083d828de46285a7d7b17d1aad <dba849cc98113b145c6e720122942c00b8012bdb
  12. Affected versionversion=b3ad46e155a6d91b36c6e892019a43e3ef3c696d
  13. Affected versionversion=dd6ff3f3862709ab1a12566e73b9d6a9b8f6e548 <191d87a19cf1005ecf41e1ae08d74e17379e8391
  14. Affected versionversion=e5207c1d69b1a9707615ab6ff9376e59fc096815
  15. Affected versionversion=fc8429f8d86801f092fbfbd257c3af821ac0dcd3 <4837a192f6d06d5bb2f3f47d6ce5353ab69bf86b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=425d9d3a92df7d96b3cfb7ee5c240293a21cbde3 <7562780e32b84196731d57dd24563546fcf6d082; version=5.10.188 <5.10.198; version=5.15.121 <5.15.135; version=5.4.251 <5.4.258; version=6.1.39 <6.1.57; version=6.3.13 <6.4; version=6.4.4 <6.5; version=6.5; version=6709d4b7bc2e079241fdef15d1160581c5261c10 <29c16c2bf5866326d5fbc4a537b3997fcac23391; version=6709d4b7bc2e079241fdef15d1160581c5261c10 <dfc7f7a988dad34c3bf4c053124fb26aa6c5f916; version=96f2c6f272ec04083d828de46285a7d7b17d1aad <dba849cc98113b145c6e720122942c00b8012bdb; version=b3ad46e155a6d91b36c6e892019a43e3ef3c696d; version=dd6ff3f3862709ab1a12566e73b9d6a9b8f6e548 <191d87a19cf1005ecf41e1ae08d74e17379e8391; version=e5207c1d69b1a9707615ab6ff9376e59fc096815; version=fc8429f8d86801f092fbfbd257c3af821ac0dcd3 <4837a192f6d06d5bb2f3f47d6ce5353ab69bf86b

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/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 exploitPublished

Weakness, pattern, technique

CWE-667Improper Locking
T1499Endpoint Denial of Service

Public exploit references

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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