CVE-2023-3161
Public on 2023-06-08
Modified on 2024-04-23
Description
A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing a font->width and font->height greater than 32 to the fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs, leading to undefined behavior and possible denial of service.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | Pending Fix | ||
| Amazon Linux 2 - Core | kernel | 2023-03-17 | ALAS2-2023-1987 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2023-03-17 | ALAS2KERNEL-5.10-2023-028 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2023-03-17 | ALAS2KERNEL-5.15-2023-014 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2024-02-01 | ALAS2KERNEL-5.15-2024-037 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2023-03-17 | ALAS2KERNEL-5.4-2023-043 | Fixed |
| Amazon Linux 2023 | kernel | 2023-03-11 | ALAS2023-2023-132 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |