CVE-2023-4385

Name: CVE-2023-4385
Creator: NVD / NIST
Published: 2023-08-16T17:15:11.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2023-4385 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.

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

0.22%

12.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	<= 5.18.19

References

https://access.redhat.com/security/cve/CVE-2023-4385Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2219272Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/0d4837fdb796f99369cf7691d33de1b856bcaf1fPatch
https://access.redhat.com/security/cve/CVE-2023-4385Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2219272Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/0d4837fdb796f99369cf7691d33de1b856bcaf1fPatch

Timeline

Published: Aug 16, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4385?

How severe is CVE-2023-4385?

CVE-2023-4385 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4385?

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-2023-4385?

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

Scan your code now

Source: NVD / NIST