CVE-2026-40706
Publication date 21 April 2026
Last updated 23 April 2026
Ubuntu priority
Description
In NTFS-3G 2022.10.3, 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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| ntfs-3g | 25.10 questing |
Fixed 1:2022.10.3-5ubuntu0.25.10.1
|
| 24.04 LTS noble |
Fixed 1:2022.10.3-1.2ubuntu3.1
|
|
| 22.04 LTS jammy |
Fixed 1:2021.8.22-3ubuntu1.3
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|