CVE-2026-56135
Publication date 15 July 2026
Last updated 31 August 2026
Ubuntu priority
Description
In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.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 creating a file in a crafted directory.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| ntfs-3g | 26.04 LTS resolute |
Fixed 1:2022.10.3-5ubuntu1.1
|
| 24.04 LTS noble |
Fixed 1:2022.10.3-1.2ubuntu3.2
|
|
| 22.04 LTS jammy |
Fixed 1:2021.8.22-3ubuntu1.4
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.4 · High
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8554-1
- NTFS-3G vulnerabilities
- 16 July 2026