SB20260320118 - Loop with Unreachable Exit Condition ('Infinite Loop') in Linux kernel ntfs3

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Main Vulnerability Database SB20260320118

SB20260320118 - Loop with Unreachable Exit Condition ('Infinite Loop') in Linux kernel ntfs3

Published: March 20, 2026

Security Bulletin ID SB20260320118
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Loop with Unreachable Exit Condition ('Infinite Loop') (CVE-ID: CVE-2025-71266)

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to improper input validation in the ntfs3 filesystem when handling a malformed dentry during lookup operations. A local attacker can provide a specially crafted NTFS-3 volume to cause a denial of service.

The attacker manipulates the HAS_SUB_NODE flag and VCN pointer in an INDEX_ENTRY, causing the indx_find() function to enter an infinite loop, repeatedly allocating memory until system resources are exhausted.


Remediation

Install update from vendor's website.

References