Linux Kernel up to 6.12.74/6.18.13/6.19.3 ntfs3 longest_match_std uninitialized pointer

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.12.74/6.18.13/6.19.3. It has been classified as critical. This vulnerability affects the function longest_match_std of the component ntfs3. Performing a manipulation results in uninitialized pointer. This vulnerability is known as CVE-2025-71311. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.12.74/6.18.13/6.19.3. This affects the function longest_match_std of the component ntfs3. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. CWE is classifying the issue as CWE-824. The product accesses or uses a pointer that has not been initialized. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Initialize new folios before use KMSAN reports an uninitialized value in longest_match_std(), invoked from ntfs_compress_write(). When new folios are allocated without being marked uptodate and ni_read_frame() is skipped because the caller expects the frame to be completely overwritten, some reserved folios may remain only partially filled, leaving the rest memory uninitialized.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2025-71311 since 05/27/2026. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 318411 (Linux Distros Unpatched Vulnerability : CVE-2025-71311), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.75, 6.18.14 or 6.19.4 eliminates this vulnerability. Applying the patch dd6c81527d097b3b0bf5a15c2fdc9657d045144c/5a30cc03bde169ad558695b26da6ea7e55f6194a/41d79f8e2a36622d148719bf7c18b46ac1264284/f223ebffa185cc8da934333c5a31ff2d4f992dc9 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (318411) and CERT Bund (WID-SEC-2026-1700). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Siemens SIMATIC S7

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 318411
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-71311

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.75/6.18.14/6.19.4
Patch: dd6c81527d097b3b0bf5a15c2fdc9657d045144c/5a30cc03bde169ad558695b26da6ea7e55f6194a/41d79f8e2a36622d148719bf7c18b46ac1264284/f223ebffa185cc8da934333c5a31ff2d4f992dc9

Timelineinfo

05/27/2026 Advisory disclosed
05/27/2026 +0 days CVE reserved
05/27/2026 +0 days VulDB entry created
07/15/2026 +49 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71311 (🔒)
GCVE (CVE): GCVE-0-2025-71311
GCVE (VulDB): GCVE-100-366105
CERT Bund: WID-SEC-2026-1700 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/27/2026 16:41
Updated: 07/15/2026 06:32
Changes: 05/27/2026 16:41 (59), 05/29/2026 07:57 (7), 06/04/2026 08:35 (2), 06/14/2026 09:23 (1), 06/22/2026 15:17 (1), 06/25/2026 23:54 (10), 07/15/2026 06:32 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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