HighFix available
ntfs-3g — security advisory
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.
- Products
- ntfs-3g
- Affected versions
- 1:2022.10.3-1, 1:2022.10.3-1+deb12u1, 1:2022.10.3-1+deb12u2, 1:2022.10.3-1+deb12u3, 1:2022.10.3-1.1, 1:2022.10.3-1.1~exp1, 1:2022.10.3-1.2, 1:2022.10.3-2, 1:2022.10.3-3, 1:2022.10.3-4, 1:2022.10.3-5, 1:2022.10.3-5+deb13u1, 1:2026.2.25-1, 1:2026.7.7-1, 1:2026.7.7-2, 1:2026.9.18-1, 1:2026.9.28-1
- Fixed versions
- 1:2022.10.3-5+deb13u2, 1:2026.7.7-2
- CVEs
- CVE-2026-42617
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 11:08 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2026-42617
ntfs-3g
Fixed versions: Not specified
ntfs-3g
Fixed versions: 1:2022.10.3-5+deb13u2
ntfs-3g
Fixed versions: 1:2026.7.7-2
Complete source record
{
"id": "39560358c61e1cb02df54ee2193416d96016bf0a887ba2f00e9b0b6813de4876",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-42617",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-42617",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-42617",
"products": [
{
"name": {
"value": "ntfs-3g",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:2022.10.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-1+deb12u2",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-1+deb12u3",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-1.1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-1.1~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-1.2",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-2",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-3",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-4",
"evidence": "/affected/0/versions"
},
{
"value": "1:2022.10.3-5",
"evidence": "/affected/0/versions"
},
{
"value": "1:2026.2.25-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2026.7.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2026.7.7-2",
"evidence": "/affected/0/versions"
},
{
"value": "1:2026.9.18-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2026.9.28-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "ntfs-3g",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2022.10.3-5+deb13u2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "1:2022.10.3-5",
"evidence": "/affected/1/versions"
},
{
"value": "1:2022.10.3-5+deb13u1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "ntfs-3g",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2026.7.7-2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1:2022.10.3-5",
"evidence": "/affected/2/versions"
},
{
"value": "1:2026.2.25-1",
"evidence": "/affected/2/versions"
},
{
"value": "1:2026.7.7-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-42617",
"aliases": [
"DEBIAN-CVE-2026-42617"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:deb/debian/ntfs-3g?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1:2022.10.3-1",
"1:2022.10.3-1+deb12u1",
"1:2022.10.3-1+deb12u2",
"1:2022.10.3-1+deb12u3",
"1:2022.10.3-1.1",
"1:2022.10.3-1.1~exp1",
"1:2022.10.3-1.2",
"1:2022.10.3-2",
"1:2022.10.3-3",
"1:2022.10.3-4",
"1:2022.10.3-5",
"1:2026.2.25-1",
"1:2026.7.7-1",
"1:2026.7.7-2",
"1:2026.9.18-1",
"1:2026.9.28-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42617.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2022.10.3-5+deb13u2"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:deb/debian/ntfs-3g?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1:2022.10.3-5",
"1:2022.10.3-5+deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42617.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2026.7.7-2"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:deb/debian/ntfs-3g?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1:2022.10.3-5",
"1:2026.2.25-1",
"1:2026.7.7-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42617.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-09T09:47:34.313250100Z",
"provider": "osv",
"upstream": [
"CVE-2026-42617"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-42617"
]
},
"related_cves": [
{
"value": "CVE-2026-42617",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 111669,
"published_at": "2026-10-07T14:17:09.587+00:00"
}