CVE-2023-53829

Local kernel-code execution via stale dirty inode

Published Dec 9, 2025 · Updated Aug 5, 2026

Use-after-free in Linux F2FS allows local users to execute code in kernel context or crash the system through atomic-write ioctls. f2fs_abort_atomic_write leaves an aborted file's inode on the dirty-metadata list, so eviction frees an object that later metadata sync dereferences and modifies. Exploitation requires a mounted F2FS filesystem and ownership of a regular file; the same flaw can also hang checkpoint, sync, and unmount operations.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux F2FS allows local users to execute code in kernel context or crash the system through atomic-write ioctls. f2fs_abort_atomic_write leaves an aborted file's inode on the dirty-metadata list, so eviction frees an object that later metadata sync dereferences and modifies. Exploitation requires a mounted F2FS filesystem and ownership of a regular file; the same flaw can also hang checkpoint, sync, and unmount operations.

The record

CVE
CVE-2023-53829
Published
Dec 9, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=3.8
  2. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <1c64dbe8fa3552a340bca6d7fa09468c16ed2a85
  3. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <a3ab55746612247ce3dcaac6de66f5ffc055b9df
  4. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <bfa7853bb47fee0c17030b377c98cf4ede47ba33

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.8; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <1c64dbe8fa3552a340bca6d7fa09468c16ed2a85; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <a3ab55746612247ce3dcaac6de66f5ffc055b9df; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <bfa7853bb47fee0c17030b377c98cf4ede47ba33

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
Privilegesauthenticated
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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