CVE-2023-3161: Fedoraproject Fedora

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Fedoraproject Fedora: version 38 only
• Linux Linux Kernel: before 6.2 (fixed in 6.2); version 6.2 only
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2023-06-12. Last modified 2026-06-17.