What is CVE-2023-39176?

CVE-2023-39176 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, classified as a Out-of-bounds Read flaw (CWE-125). CVE-2023-39176 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-39176?

CVE-2023-39176 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Is there a patch available for CVE-2023-39176?

No patch is currently available for CVE-2023-39176. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-39176 actively exploited?

CVE-2023-39176 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2023-39176

High

A flaw was found within the parsing of SMB2 requests that have a transform header in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.

Package Linux Kernel

Published 2024-11-18

Last modified 2025-08-06

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Vector string

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

Weakness type

CWE-125

CVE-2023-39176 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-39176 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
https://access.redhat.com/security/cve/CVE-2023-39176

Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=2326503

Issue Tracking Third Party Advisory
Zerodayinitiative
https://www.zerodayinitiative.com/advisories/ZDI-24-586/

Third Party Advisory

Details

CVE ID CVE-2023-39176

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2024-11-18

Modified 2025-08-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-39176?

CVE-2023-39176 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . CVE-2023-39176 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-39176?

CVE-2023-39176 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Is there a patch available for CVE-2023-39176?

No patch is currently available for CVE-2023-39176. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-39176 actively exploited?

No — CVE-2023-39176 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. View CWE-125 on MITRE CWE →