CVE-2023-38409

Name: CVE-2023-38409
Creator: NVD / NIST
Published: 2023-07-17T22:15:09.54+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2023-38409 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An issue was discovered in set_con2fb_map in drivers/video/fbdev/core/fbcon.c in the Linux kernel before 6.2.12. Because an assignment occurs only for the first vc, the fbcon_registered_fb and fbcon_display arrays can be desynchronized in fbcon_mode_deleted (the con2fb_map points at the old fb_info).. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

An issue was discovered in set_con2fb_map in drivers/video/fbdev/core/fbcon.c in the Linux kernel before 6.2.12. Because an assignment occurs only for the first vc, the fbcon_registered_fb and fbcon_display arrays can be desynchronized in fbcon_mode_deleted (the con2fb_map points at the old fb_info).

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

0.18%

7.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 6.2.12

References

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.12Mailing List, Release Notes
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=fffb0b52d5258554c645c966c6cbef7de50b851dMailing List, Patch
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.12Mailing List, Release Notes
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=fffb0b52d5258554c645c966c6cbef7de50b851dMailing List, Patch

Timeline

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

Frequently Asked Questions

What is CVE-2023-38409?

How severe is CVE-2023-38409?

CVE-2023-38409 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2023-38409?

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-2023-38409?

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

Scan your code now

Source: NVD / NIST