CVE-2023-4394

Name: CVE-2023-4394
Creator: NVD / NIST
Published: 2023-08-17T13:15:11.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2023-4394 is a medium-severity vulnerability rated 6/10 on the CVSS scale. A use-after-free flaw was found in btrfs_get_dev_args_from_path in fs/btrfs/volumes.c in btrfs file-system in the Linux Kernel. This flaw allows a local attacker with special privileges to cause a system crash or leak internal kernel information. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

A use-after-free flaw was found in btrfs_get_dev_args_from_path in fs/btrfs/volumes.c in btrfs file-system in the Linux Kernel. This flaw allows a local attacker with special privileges to cause a system crash or leak internal kernel information

Metrics

CVSS 3.1

6/10

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

EPSS Probability

0.21%

10.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 6.0	—
Linux	Linux Kernel	6.0	Rc1

References

https://access.redhat.com/security/cve/CVE-2023-4394Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2219263Issue Tracking, Patch, Third Party Advisory
https://patchwork.kernel.org/project/linux-btrfs/patch/20220815151606.3479183-1-r33s3n6@gmail.com/Mailing List, Patch, Vendor Advisory
https://access.redhat.com/security/cve/CVE-2023-4394Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2219263Issue Tracking, Patch, Third Party Advisory
https://patchwork.kernel.org/project/linux-btrfs/patch/20220815151606.3479183-1-r33s3n6@gmail.com/Mailing List, Patch, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2023-4394?

How severe is CVE-2023-4394?

CVE-2023-4394 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4394?

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-2023-4394?

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

Scan your code now

Source: NVD / NIST