CVE-2026-42617
Publication date 15 July 2026
Last updated 8 October 2026
Ubuntu priority
Description
In NTFS-3G through 2026.2.25, 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.
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
7.1 · High
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8554-1
- NTFS-3G vulnerabilities
- 16 July 2026