Out-of-Bounds Read in NTFS-3G

Executive Summary

This vulnerability is an out-of-bounds read flaw in NTFS-3G through 2026.2.25. It exists in the ntfs_ir_nill() function in libntfs-3g/index.c. An attacker can exploit this by creating a malicious NTFS image containing a file with a specially crafted name. When the file is created, it triggers the out-of-bounds read, potentially allowing the attacker to access confidential information within the ntfs-3g process.

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Detection Guidance

This vulnerability is triggered by creating a file with a crafted name in an NTFS filesystem. To detect it, inspect filesystems mounted with ntfs-3g for unusual filenames or corrupted metadata. Check logs for ntfs-3g errors or crashes. No specific commands are provided in the context.

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Impact Analysis

If you use NTFS-3G to access or manage NTFS filesystems, an attacker could exploit this vulnerability to read sensitive data from your system. This might include confidential files or information processed by the ntfs-3g process. The impact depends on what data is accessible during the exploitation.

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Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations. If personal or health data is exposed, it could result in legal penalties, reputational damage, and loss of trust. Organizations must address this flaw to maintain regulatory compliance.

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Mitigation Strategies

Update ntfs-3g to the latest version as soon as patches are available. Avoid mounting untrusted NTFS images. Monitor ntfs-3g processes for crashes or suspicious activity. Disable ntfs-3g if not required.

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