Description
A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to 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.
Scores
CVSS v3
5.5
EPSS
0.0001
EPSS Percentile
2.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1335
CWE-682
Status
published
Products (5)
fedoraproject/fedora
38
linux/linux_kernel
6.2 rc1 (6 CPE variants)
linux/linux_kernel
< 6.2
redhat/enterprise_linux
8.0
redhat/enterprise_linux
9.0
Published
Jun 12, 2023
Tracked Since
Feb 18, 2026