CVE-2026-118384
Published: October 30, 2026Last modified: November 4, 2026
Description
GNU mtools through 4.0.49 has an out-of-bounds write in parse_vses in vfat.c.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.1 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | LOW |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | mtools | Unknown (4.0.42-r0) |
| 25 LTS | mtools | Unknown (4.0.47-r0) | |
| Stream | mtools | Fixed (4.0.50-r0) |
References
- http://www.openwall.com/lists/oss-security/2026/10/31/1
- https://ftp.gnu.org/gnu/mtools/mtools-4.0.49.tar.gz
- https://github.com/deepin-community/mtools/blob/16d295331a1cfbcf02ad0b2f03c9b906197cf3ee/vfat.c#L399
- https://github.com/deepin-community/mtools/blob/16d295331a1cfbcf02ad0b2f03c9b906197cf3ee/vfat.c#L444-L445
- https://lists.gnu.org/archive/html/info-gnu/2025-06/msg00004.html
- https://lists.gnu.org/archive/html/info-mtools/2026-10/msg00001.html
- https://lists.gnu.org/archive/html/info-mtools/2026-10/msg00002.html
- https://lists.gnu.org/archive/html/info-mtools/2026-10/msg00004.html