CVE-2023-52590

Filesystem corruption via unlocked same-parent directory rename

Published Mar 6, 2024 · Updated Aug 5, 2026

Improper locking in Linux kernel OCFS2 before 6.7.4 allows local users to corrupt a mounted filesystem through same-parent directory renames. The ocfs2_rename path updates the moved directory even when its parent is unchanged, although VFS does not hold that directory's lock in this case. A local user needs write and rename permission on a mounted OCFS2 volume; corruption can remount the volume read-only or panic the host.

CVSS severity5.5
Medium
EPSS probability0.17%
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 Linux kernel OCFS2 before 6.7.4 allows local users to corrupt a mounted filesystem through same-parent directory renames. The ocfs2_rename path updates the moved directory even when its parent is unchanged, although VFS does not hold that directory's lock in this case. A local user needs write and rename permission on a mounted OCFS2 volume; corruption can remount the volume read-only or panic the host.

The record

CVE
CVE-2023-52590
Published
Mar 6, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2024CVE 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=2.6.16
  2. Affected versionversion=ccd979bdbce9fba8412beb3f1de68a9d0171b12c <9d618d19b29c2943527e3a43da0a35aea91062fc
  3. Affected versionversion=ccd979bdbce9fba8412beb3f1de68a9d0171b12c <de940cede3c41624e2de27f805b490999f419df9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.16; version=ccd979bdbce9fba8412beb3f1de68a9d0171b12c <9d618d19b29c2943527e3a43da0a35aea91062fc; version=ccd979bdbce9fba8412beb3f1de68a9d0171b12c <de940cede3c41624e2de27f805b490999f419df9

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.

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

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

CWE-667Improper Locking
T1499.004Application or System Exploitation

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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