CVE-2023-6039

Name: CVE-2023-6039
Creator: NVD / NIST
Published: 2023-11-09T15:15:09.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2023-6039 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A use-after-free flaw was found in lan78xx_disconnect in drivers/net/usb/lan78xx.c in the network sub-component, net/usb/lan78xx in the Linux Kernel. This flaw allows a local attacker to crash the system when the LAN78XX USB device detaches.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

A use-after-free flaw was found in lan78xx_disconnect in drivers/net/usb/lan78xx.c in the network sub-component, net/usb/lan78xx in the Linux Kernel. This flaw allows a local attacker to crash the system when the LAN78XX USB device detaches.

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

0.26%

17.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 6.5	—
Linux	Linux Kernel	6.5	Rc1

References

https://access.redhat.com/security/cve/CVE-2023-6039Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2248755Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3Patch
https://access.redhat.com/security/cve/CVE-2023-6039Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2248755Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/1e7417c188d0a83fb385ba2dbe35fd2563f2b6f3Patch

Timeline

Published: Nov 9, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-6039?

How severe is CVE-2023-6039?

CVE-2023-6039 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2023-6039?

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-2023-6039?

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

Scan your code now

Source: NVD / NIST