ALPINE-CVE-2026-40706
In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfs_build_permissions_posix() in acls.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 on the READ path (stat, readdir, open) when processing a security descriptor with multiple ACCESS_DENIED ACEs containing WRITE_OWNER from distinct group SIDs.
ALPINE-CVE-2026-40706
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:ALPINE-CVE-2026-40706
ntfs-3g
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2026.2.25-r0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
ntfs-3g
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2026.2.25-r0
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
ntfs-3g
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2026.2.25-r0
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
ntfs-3g
Source reference: /affected/3/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2026.2.25-r0
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
ntfs-3g
Source reference: /affected/4/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 2026.2.25-r0
Source reference:
/affected/4/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.2.25-r0"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:apk/alpine/ntfs-3g?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.2.25-r0"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:apk/alpine/ntfs-3g?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.2.25-r0"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:apk/alpine/ntfs-3g?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.2.25-r0"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:apk/alpine/ntfs-3g?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.2.25-r0"
}
]
}
],
"package": {
"name": "ntfs-3g",
"purl": "pkg:apk/alpine/ntfs-3g?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #54349 · Revision 1
- Added to Heist Feed
- Publisher date