CVE-2025-26595
Public on 2025-02-25
Modified on 2025-02-28
Description
A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | xorg-x11-server | No Fix Planned | ||
| Amazon Linux 2 - Core | xorg-x11-server | 2025-03-08 | ALAS2-2025-2791 | Fixed |
| Amazon Linux 2023 | xorg-x11-server | 2025-03-06 | ALAS2023-2025-892 | Fixed |
| Amazon Linux 2023 | xorg-x11-server-Xwayland | 2025-03-06 | ALAS2023-2025-891 | Fixed |
| Amazon Linux 2023 | xorg-x11-server-Xwayland | 2025-03-13 | ALAS2023-2025-895 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
| NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |