Description
In the Linux kernel, the following vulnerability has been resolved:

ntfs: reject invalid empty mapping pairs

Reject an attribute with empty mapping pairs if it has inconsistent
highest VCN and size.
Published: 2026-09-11
Score: 4.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Faulty Data Access
Action: Apply Patch
AI Analysis

Impact

The Linux kernel’s NTFS driver incorrectly processed attributes that contained empty mapping pairs when the highest VCN and size did not match. Because the driver failed to reject such malformed attributes, an attacker could craft an NTFS volume that, when mounted, would cause the kernel to misinterpret the attribute, potentially leading to erroneous data reads or kernel crashes during volume access. The flaw is a classic instance of input validation weakness listed under CWE-130.

Affected Systems

Any Linux kernel release running the NTFS module prior to the applied patch is potentially affected. The advisory lists a generic Linux kernel product with no version‑specific restrictions, implying that the issue exists in all kernels that have not yet incorporated the NTFS fix.

Risk and Exploitability

The vulnerability carries a CVSS score of 4.4, indicating a low‑to‑moderate severity. The EPSS score is below 1% and the issue is not present in the CISA KEV catalog, suggesting a low likelihood of known exploitation. The attack path appears straightforward: mount an NTFS volume containing crafted attributes with empty mapping pairs and inconsistent highest VCN and size, provoking the kernel to process them incorrectly. No publicly available exploits are reported.

Generated by OpenCVE AI on September 13, 2026 at 02:40 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the upstream patch that adds the missing input validation for empty mapping pairs, thereby correcting the flaw identified by CWE-130.
  • If an immediate kernel upgrade is not possible, rebuild the kernel with NTFS support disabled by setting CONFIG_NTFS_FS=n or removing the module, which removes the code path that could lead to a CWE-130 condition.
  • After applying the patch or disabling NTFS, remount any existing NTFS volumes to ensure malformed attributes are now rejected and no abnormal behavior occurs.

Generated by OpenCVE AI on September 13, 2026 at 02:40 UTC.

Tracking

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Advisories

No advisories yet.

History

Sat, 12 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665

Sat, 12 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-130
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Sat, 12 Sep 2026 09:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665

Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ntfs: reject invalid empty mapping pairs Reject an attribute with empty mapping pairs if it has inconsistent highest VCN and size.
Title ntfs: reject invalid empty mapping pairs
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-11T19:45:14.081Z

Reserved: 2026-09-11T19:38:34.735Z

Link: CVE-2026-89613

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T20:19:46.433

Modified: 2026-09-11T20:19:46.433

Link: CVE-2026-89613

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-11T19:45:14Z

Links: CVE-2026-89613 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-13T02:45:17Z

Weaknesses
  • CWE-130

    Improper Handling of Length Parameter Inconsistency