Loading vulnerability…
CVE-2026-42617 is a heap memory corruption vulnerability in ntfs-3g affecting the ntfs_ir_to_ib() function. The flaw occurs while copying index data from an NTFS index root to an index block when the software processes a corrupt or maliciously crafted NTFS filesystem image. Improper handling of attacker-controlled filesystem metadata can corrupt heap memory during index structure conversion or population, creating conditions for process instability and potential control-flow hijacking. Because ntfs-3g commonly operates with elevated privileges in filesystem handling contexts, successful exploitation may result in execution of attacker-controlled code with root privileges.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Heap memory corruption vulnerability in ntfs-3g when copying index data from root to an index block in a corrupt or maliciously crafted filesystem.
Vulnerability in the ntfs_ir_to_ib() function in NTFS-3G that may allow root code execution via a specially crafted NTFS image.
Memory-safety vulnerability in NTFS-3G function ntfs_ir_to_ib() 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.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.