CVE-2025-71072

Local service interruption via failed tmpfs renames

Published Jan 13, 2026 · Updated Jan 13, 2026

A rename-recovery flaw in affected Linux Kernel releases allows local users to interrupt service via tmpfs renames under severe memory pressure. On the failure path, shmem_rename2 completes shmem_whiteout before a later Maple Tree insertion fails, and simple_offset_rename does not restore a consistent rename state. Reachability requires local rename activity on a tmpfs filesystem during severe memory pressure; published sources do not identify a more specific failure mode than loss of availability.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A rename-recovery flaw in affected Linux Kernel releases allows local users to interrupt service via tmpfs renames under severe memory pressure. On the failure path, shmem_rename2 completes shmem_whiteout before a later Maple Tree insertion fails, and simple_offset_rename does not restore a consistent rename state. Reachability requires local rename activity on a tmpfs filesystem during severe memory pressure; published sources do not identify a more specific failure mode than loss of availability.

The record

CVE
CVE-2025-71072
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=6.6
  2. Affected versionversion=a2e459555c5f9da3e619b7e47a63f98574dc75f1 <4642686699a46718d7f2fb5acd1e9d866a9d9cca
  3. Affected versionversion=a2e459555c5f9da3e619b7e47a63f98574dc75f1 <4b0fe71fb3965d0db83cdfc2f4fe0b3227d70113
  4. Affected versionversion=a2e459555c5f9da3e619b7e47a63f98574dc75f1 <e1b4c6a58304fd490124cc2b454d80edc786665c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.6; version=a2e459555c5f9da3e619b7e47a63f98574dc75f1 <4642686699a46718d7f2fb5acd1e9d866a9d9cca; version=a2e459555c5f9da3e619b7e47a63f98574dc75f1 <4b0fe71fb3965d0db83cdfc2f4fe0b3227d70113; version=a2e459555c5f9da3e619b7e47a63f98574dc75f1 <e1b4c6a58304fd490124cc2b454d80edc786665c

Published CVSS scores

5.5NVDCVSS: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 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

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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