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CVE-2023-4385

5.5 · MEDIUM

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.

Published Aug 16, 2023CWE-476EPSS 0.23%

Overview

CVE-2023-4385 is a medium-severity vulnerability. It was published on August 16, 2023 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/security/cve/CVE-2023-4385Refbugzilla.redhat.com/show_bug.cgi?id=2219272GitHubgithub.com/torvalds/linux/commit/0d4837fdb796f99369cf7691d33de1b856bcaf1fRefaccess.redhat.com/security/cve/CVE-2023-4385Refbugzilla.redhat.com/show_bug.cgi?id=2219272GitHubgithub.com/torvalds/linux/commit/0d4837fdb796f99369cf7691d33de1b856bcaf1f

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4385?

CVE-2023-4385 is a medium-severity vulnerability. It was published on August 16, 2023 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-4385?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-4385?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-4385?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4385 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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