CVE-2023-39180

Name: CVE-2023-39180
Creator: NVD / NIST
Published: 2024-11-18T10:15:05.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.38%

Last modified Jun 17, 2026

CVE-2023-39180 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. EPSS estimates a 1.38% chance of exploitation in the next 30 days.

Description

A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this to create a denial-of-service condition on affected installations of Linux. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.38%

68.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	All versions

References

https://access.redhat.com/security/cve/CVE-2023-39180Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2326531Issue Tracking, Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-24-589/Third Party Advisory

Timeline

Published: Nov 18, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-39180?

How severe is CVE-2023-39180?

CVE-2023-39180 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.38% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39180?

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-2023-39180?

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

Scan your code now

Source: NVD / NIST