CVE-2026-42617

NameCVE-2026-42617
DescriptionIn NTFS-3G before 2026.7.7, a heap buffer overflow exists in ntfs_ir_to_ib() in 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 extending a directory, e.g., by creating a file.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6389-1
Debian Bugs1142144

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ntfs-3g (PTS)bookworm, bookworm (security)1:2022.10.3-1+deb12u3vulnerable
trixie1:2022.10.3-5+deb13u2fixed
trixie (security)1:2022.10.3-5+deb13u3fixed
forky, sid1:2026.9.28-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ntfs-3gsourceexperimental1:2026.7.7-1
ntfs-3gsourcetrixie1:2022.10.3-5+deb13u2DSA-6389-1
ntfs-3gsource(unstable)1:2026.7.7-21142144

Notes

https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-jv65-qqf7-f692
https://www.openwall.com/lists/oss-security/2026/07/15/6
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