CVE catalog

CVE-2026-42617

NTFS-3G vulnerabilities

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: Jul 21, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.15% · Oct 25, 2026

In 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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	ntfs-3g	sid	`1:2026.9.28-2`	fixed
Debian	ntfs-3g	forky	`1:2026.9.28-2`	fixed
Debian	ntfs-3g	trixie	`1:2022.10.3-5+deb13u2`	fixed
Debian	ntfs-3g	trixie-security	`1:2022.10.3-5+deb13u3`	fixed
Debian	ntfs-3g	bookworm	`1:2022.10.3-1+deb12u3`	vulnerable
Debian	ntfs-3g	bookworm-security	`1:2022.10.3-1+deb12u3`	vulnerable
Ubuntu	ntfs-3g	noble	Not reported	vulnerable
Ubuntu	ntfs-3g	noble	`1:2022.10.3-1.2ubuntu3.2`	fixed
Ubuntu	libntfs-3g89t64	noble	`1:2022.10.3-1.2ubuntu3.2`	fixed
Ubuntu	ntfs-3g-dev	noble	`1:2022.10.3-1.2ubuntu3.2`	fixed
Cpe	ntfs-3g	Not reported	`2026.7.7`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	ntfs-3g	source	sid	`1:2026.7.7-2`	not yet assigned	Not reported	[1142144]
Debian	ntfs-3g	source	forky	`1:2026.7.7-2`	not yet assigned	Not reported	[1142144]
Debian	ntfs-3g	source	trixie	`1:2022.10.3-5+deb13u2`	not yet assigned	Not reported	[1142144]
Debian	ntfs-3g	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1142144]
Ubuntu	ntfs-3g	deb	noble	`1:2022.10.3-1.2ubuntu3.2`	Not reported	Not reported	Not reported
Ubuntu	libntfs-3g89t64	deb	noble	`1:2022.10.3-1.2ubuntu3.2`	Not reported	Not reported	Not reported
Ubuntu	ntfs-3g-dev	deb	noble	`1:2022.10.3-1.2ubuntu3.2`	Not reported	Not reported	Not reported
Cpe	ntfs-3g	cpe	Not reported	`2026.7.7`	Not reported	NVD-CVE-2026-42617	Not reported

[Debian bug #1142144]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libntfs-3g89]Affected
Source package: [ntfs-3g]
Details (4)
- 1:2022.10.3-1+deb12u3 · amd64 · bookworm
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · arm64 · bookworm
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · amd64 · bookworm-security
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · arm64 · bookworm-security
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
[ntfs-3g]Affected
Details (4)
- 1:2022.10.3-1+deb12u3 · amd64 · bookworm
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · arm64 · bookworm
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · amd64 · bookworm-security
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · arm64 · bookworm-security
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
[ntfs-3g-dev]Affected
Source package: [ntfs-3g]
Details (4)
- 1:2022.10.3-1+deb12u3 · amd64 · bookworm
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · arm64 · bookworm
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · amd64 · bookworm-security
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12
- 1:2022.10.3-1+deb12u3 · arm64 · bookworm-security
  Affected
  usn · ntfs-3g · debian · bookworm; usn · ntfs-3g · debian · 12

[Debian 13 (Trixie)]

[libntfs-3g89t64]Affected
Source package: [ntfs-3g]
Details (5)
- 1:2022.10.3-5+deb13u1 · amd64 · trixie
  Affected · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u1 · arm64 · trixie
  Affected · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u2 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
[ntfs-3g]Affected
Details (5)
- 1:2022.10.3-5+deb13u1 · amd64 · trixie
  Affected · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u1 · arm64 · trixie
  Affected · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u2 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
[ntfs-3g-dev]Affected
Source package: [ntfs-3g]
Details (5)
- 1:2022.10.3-5+deb13u1 · amd64 · trixie
  Affected · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u1 · arm64 · trixie
  Affected · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u2 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13
- 1:2022.10.3-5+deb13u3 · amd64 · trixie-security
  Fixed · Fixed: 1:2022.10.3-5+deb13u2
  usn · ntfs-3g · debian · 13

Observed: Oct 27, 2026, 7:12:47 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]