CVE-2025-22120

Local task hang via unreleased invalidate lock

Published Apr 16, 2025 · Updated May 23, 2026

Denial of service in Linux kernel ext4 6.6.70 through 6.6.88, 6.12.5 through 6.12.25, and 6.13 allows local users to hang tasks. The ext4_setattr error path jumps past filemap_invalidate_unlock when ext4_inode_attach_jinode fails, leaving mapping->invalidate_lock held. Triggering the flaw requires local low-privileged access and an ext4 journal-inode attachment failure, such as an out-of-memory condition; subsequent file reads can remain blocked.

CVSS severity5.5
Medium
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

Denial of service in Linux kernel ext4 6.6.70 through 6.6.88, 6.12.5 through 6.12.25, and 6.13 allows local users to hang tasks. The ext4_setattr error path jumps past filemap_invalidate_unlock when ext4_inode_attach_jinode fails, leaving mapping->invalidate_lock held. Triggering the flaw requires local low-privileged access and an ext4 journal-inode attachment failure, such as an out-of-memory condition; subsequent file reads can remain blocked.

The record

CVE
CVE-2025-22120
Published
Apr 16, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 2025CVE 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=6.12.5 <6.12.26
  2. Affected versionversion=6.13
  3. Affected versionversion=6.6.70 <6.6.89
  4. Affected versionversion=93011887013dbaa0e3a0285176ca89be153df651 <551667f99bcf04fa58594d7d19aef73c861a1200
  5. Affected versionversion=b6ce2dbe984bcd7fb0c1df15b5e2fa57e1574a8e <45314999f950321a341033ae8f9ac12dce40669b
  6. Affected versionversion=c7fc0366c65628fd69bfc310affec4918199aae2 <32d872e3905746ff1048078256cb00f946b97d8a
  7. Affected versionversion=c7fc0366c65628fd69bfc310affec4918199aae2 <7e91ae31e2d264155dfd102101afc2de7bd74a64

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12.5 <6.12.26; version=6.13; version=6.6.70 <6.6.89; version=93011887013dbaa0e3a0285176ca89be153df651 <551667f99bcf04fa58594d7d19aef73c861a1200; version=b6ce2dbe984bcd7fb0c1df15b5e2fa57e1574a8e <45314999f950321a341033ae8f9ac12dce40669b; version=c7fc0366c65628fd69bfc310affec4918199aae2 <32d872e3905746ff1048078256cb00f946b97d8a; version=c7fc0366c65628fd69bfc310affec4918199aae2 <7e91ae31e2d264155dfd102101afc2de7bd74a64

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.

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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

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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