BINARY ntfs-3g prior 2026.7.7 NTFS Image libntfs-3g/index.c ntfs_ib_cut_tail heap-based overflow

Summaryinfo

A vulnerability was found in BINARY ntfs-3g and classified as very critical. This impacts the function ntfs_ib_cut_tail of the file libntfs-3g/index.c of the component NTFS Image Handler. Executing a manipulation can lead to heap-based overflow. This vulnerability is handled as CVE-2026-46572. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in BINARY ntfs-3g. It has been declared as very critical. This vulnerability affects the function ntfs_ib_cut_tail of the file libntfs-3g/index.c of the component NTFS Image Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ib_cut_tail() in libntfs-3g/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 creating a file in a specially crafted directory.

The advisory is available at github.com. This vulnerability was named CVE-2026-46572 since 05/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/07/2026).

Upgrading to version 2026.7.7 eliminates this vulnerability.

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Productinfo

Vendor

• BINARY

Name

• ntfs-3g

CPE 2.3info

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CPE 2.2info

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