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CVE-2026-46569 is a heap buffer overflow vulnerability in NTFS-3G affecting the ntfs_ib_copy_tail() function. The flaw occurs when tail data from an NTFS index block is copied into a newly allocated block without proper bounds enforcement, allowing memory corruption during processing of malformed or maliciously crafted NTFS filesystem structures. The issue is triggered while parsing specially crafted NTFS images or filesystems and affects the userspace NTFS driver and related tooling that handle such data.
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Heap buffer overflow vulnerability in ntfs-3g when copying the tail data of an index block to a freshly allocated block.
Memory-safety vulnerability in the ntfs_ib_copy_tail() function in NTFS-3G that can lead to root code execution when a specially crafted NTFS image is processed.
Memory-safety vulnerability in NTFS-3G function ntfs_ib_copy_tail() that could allow root code execution via a specially crafted NTFS image.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.