CVE-2025-71311Public exploit

Unspecified impact via uninitialized NTFS3 folios

Published May 27, 2026 · Updated May 27, 2026

Use of uninitialized memory in Linux Kernel allows attackers to cause unspecified impact through an NTFS3 compressed write. ntfs_get_frame_pages allocates new folios without zeroing them, and a skipped ni_read_frame leaves partially written reserved folios containing uninitialized bytes. Reachability requires the NTFS3 compression path; the public reproducer establishes a KMSAN uninitialized-value report, while published CVSS assessments disagree on impact and access.

CVSS severity8.2
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use of uninitialized memory in Linux Kernel allows attackers to cause unspecified impact through an NTFS3 compressed write. ntfs_get_frame_pages allocates new folios without zeroing them, and a skipped ni_read_frame leaves partially written reserved folios containing uninitialized bytes. Reachability requires the NTFS3 compression path; the public reproducer establishes a KMSAN uninitialized-value report, while published CVSS assessments disagree on impact and access.

The record

CVE
CVE-2025-71311
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-908
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <41d79f8e2a36622d148719bf7c18b46ac1264284
  2. Affected versionversion=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <5a30cc03bde169ad558695b26da6ea7e55f6194a
  3. Affected versionversion=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <dd6c81527d097b3b0bf5a15c2fdc9657d045144c
  4. Affected versionversion=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <f223ebffa185cc8da934333c5a31ff2d4f992dc9
  5. Affected versionversion=6.11

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <41d79f8e2a36622d148719bf7c18b46ac1264284; version=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <5a30cc03bde169ad558695b26da6ea7e55f6194a; version=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <dd6c81527d097b3b0bf5a15c2fdc9657d045144c; version=584f60ba22f79c89e6708ab82a5b5d9b8fa21fb2 <f223ebffa185cc8da934333c5a31ff2d4f992dc9; version=6.11

Published CVSS scores

8.2kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-908Use of Uninitialized Resource

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo