CVE-2023-3161

MEDIUM

Linux Kernel - Buffer Overflow

Title source: llm

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.

References (2)

[Issue Tracking, Patch, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=2213485

[Patch] https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0be

View Patch ZIP pw:eip

Scores

CVSS v3 5.5

EPSS 0.0001

EPSS Percentile 1.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-1335 CWE-682

Status published

Affected Products (10)

linux/linux_kernel < 6.2

linux/linux_kernel

fedoraproject/fedora

redhat/enterprise_linux

Timeline

Published Jun 12, 2023

Tracked Since Feb 18, 2026