CVE-2023-3161

Name: CVE-2023-3161
Creator: NVD / NIST
Published: 2023-06-12T20:15:12.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2023-3161 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.21%

10.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 6.2	—
Linux	Linux Kernel	6.2	Rc1
Fedoraproject	Fedora	38	—
Redhat	Enterprise Linux	8.0	—
Redhat	Enterprise Linux	9.0	—

References

https://bugzilla.redhat.com/show_bug.cgi?id=2213485Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0bePatch
https://bugzilla.redhat.com/show_bug.cgi?id=2213485Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0bePatch

Timeline

Published: Jun 12, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-3161?

How severe is CVE-2023-3161?

CVE-2023-3161 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3161?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-3161?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST