CVE-2026-23252

Local scrub interruption via XFS description allocation failure

Published Mar 18, 2026 · Updated Mar 18, 2026

Allocation failure in Linux Kernel XFS scrub code allows local users to interrupt scrub operations during filesystem repair. The xchk_xfile_*_descr macros pass formatted debugging descriptions to kasprintf, where strings beyond no-fail allocation guarantees can make allocation fail. Low-privilege local access is required; the published assessment limits impact to availability and reports no data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Allocation failure in Linux Kernel XFS scrub code allows local users to interrupt scrub operations during filesystem repair. The xchk_xfile_*_descr macros pass formatted debugging descriptions to kasprintf, where strings beyond no-fail allocation guarantees can make allocation fail. Low-privilege local access is required; the published assessment limits impact to availability and reports no data disclosure or modification.

The record

CVE
CVE-2026-23252
Published
Mar 18, 2026
Updated
Mar 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.10
  2. Affected versionversion=ab97f4b1c030750f2475bf4da8a9554d02206640 <18e9cf2259b4157fd282b323514375f2f6a59edb
  3. Affected versionversion=ab97f4b1c030750f2475bf4da8a9554d02206640 <2d8afee89262762fe0e5547772708c75f320c957
  4. Affected versionversion=ab97f4b1c030750f2475bf4da8a9554d02206640 <60382993a2e18041f88c7969f567f168cd3b4de3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.10; version=ab97f4b1c030750f2475bf4da8a9554d02206640 <18e9cf2259b4157fd282b323514375f2f6a59edb; version=ab97f4b1c030750f2475bf4da8a9554d02206640 <2d8afee89262762fe0e5547772708c75f320c957; version=ab97f4b1c030750f2475bf4da8a9554d02206640 <60382993a2e18041f88c7969f567f168cd3b4de3

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

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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