CVE-2023-54192

Kernel crash via null tracepoint pointer

Published Dec 30, 2025 · Updated Dec 30, 2025

NULL pointer dereference in Linux f2fs allows local users to crash affected kernels through an atomic-write commit ioctl. The __replace_atomic_write_block tracepoint dereferences old_addr even when the recovery path supplies NULL instead of a block-address pointer. Triggering the f2fs atomic-write commit path on an affected f2fs filesystem can panic the host; affected lines are 6.1.18 through 6.1.28, 6.2.5 through 6.2.15, and 6.3 through 6.3.2.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
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

NULL pointer dereference in Linux f2fs allows local users to crash affected kernels through an atomic-write commit ioctl. The __replace_atomic_write_block tracepoint dereferences old_addr even when the recovery path supplies NULL instead of a block-address pointer. Triggering the f2fs atomic-write commit path on an affected f2fs filesystem can panic the host; affected lines are 6.1.18 through 6.1.28, 6.2.5 through 6.2.15, and 6.3 through 6.3.2.

The record

CVE
CVE-2023-54192
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
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=2f3a9ae990a7881c9a57a073bb52ebe34fdc3160 <da6ea0b050fa720302b56fbb59307e7c7531a342
  2. Affected versionversion=2f3a9ae990a7881c9a57a073bb52ebe34fdc3160 <e2bbefc1741cb0732c13652be173da02f25611d1
  3. Affected versionversion=6.3
  4. Affected versionversion=9ad51915f4b368eef8f4cbd3a0b6367d4504c245 <424f8cdc0ad29e4940be96dcc0b935ba497adeda
  5. Affected versionversion=f955d66b179679312310d42108c0df1cd0714313 <1424358cd66c49460493293497b54cb72e0213cc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=2f3a9ae990a7881c9a57a073bb52ebe34fdc3160 <da6ea0b050fa720302b56fbb59307e7c7531a342; version=2f3a9ae990a7881c9a57a073bb52ebe34fdc3160 <e2bbefc1741cb0732c13652be173da02f25611d1; version=6.3; version=9ad51915f4b368eef8f4cbd3a0b6367d4504c245 <424f8cdc0ad29e4940be96dcc0b935ba497adeda; version=f955d66b179679312310d42108c0df1cd0714313 <1424358cd66c49460493293497b54cb72e0213cc

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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