In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ir_to_ib() in index.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by extending a directory, e.g., by creating a file.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-6389-1 ntfs-3g security update
Ubuntu USN Ubuntu USN USN-8554-1 NTFS-3G vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 08 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in NTFS-3G SUID-root Binary Leading to Root Privilege Escalation

Wed, 07 Oct 2026 23:00:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in ntfs‑3g Allows Root Privilege Escalation
Weaknesses CWE-285

Wed, 07 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in ntfs‑3g Allows Root Privilege Escalation
Weaknesses CWE-122
CWE-285

Wed, 07 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Tuxera
Tuxera ntfs-3g
Vendors & Products Tuxera
Tuxera ntfs-3g

Wed, 07 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Description In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ir_to_ib() in index.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by extending a directory, e.g., by creating a file.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-07T20:24:32.227Z

Reserved: 2026-04-29T00:00:00.000Z

Link: CVE-2026-42617

cve-icon Vulnrichment

Updated: 2026-10-07T20:24:26.027Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-10-07T14:17:09.587

Modified: 2026-10-07T21:17:16.307

Link: CVE-2026-42617

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-08T00:30:04Z

Weaknesses