ALPINE-CVE-2026-40706

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Source
https://security.alpinelinux.org/vuln/CVE-2026-40706
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-40706
Upstream
Published
2026-04-21T22:16:19Z
Modified
2026-09-14T16:18:08Z
Severity
  • 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Alpine:v3.20 / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:apk/alpine/ntfs-3g?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2026.2.25-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"

Alpine:v3.21 / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:apk/alpine/ntfs-3g?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2026.2.25-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"

Alpine:v3.22 / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:apk/alpine/ntfs-3g?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2026.2.25-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"

Alpine:v3.23 / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:apk/alpine/ntfs-3g?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2026.2.25-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"

Alpine:v3.24 / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:apk/alpine/ntfs-3g?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2026.2.25-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40706.json"