CVE-2023-32247

Name: CVE-2023-32247
Creator: NVD / NIST
Published: 2023-07-24T16:15:11.47+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.87%

Last modified Jun 17, 2026

CVE-2023-32247 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_SESSION_SETUP commands. EPSS estimates a 3.87% chance of exploitation in the next 30 days.

Description

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_SESSION_SETUP commands. The issue results from the lack of control of resource consumption. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

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

3.87%

88.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 5.15, < 5.15.145
Linux	Linux Kernel	>= 5.16, < 6.1.29
Linux	Linux Kernel	>= 6.2, < 6.2.16
Linux	Linux Kernel	>= 6.3, < 6.3.2
Netapp	H300s	All versions
Netapp	H410s	All versions
Netapp	H500s	All versions
Netapp	H700s	All versions

References

https://access.redhat.com/security/cve/CVE-2023-32247Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2219803Issue Tracking, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20230915-0011/Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20478/Patch, Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/CVE-2023-32247Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2219803Issue Tracking, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20230915-0011/Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20478/Patch, Third Party Advisory, VDB Entry

Timeline

Published: Jul 24, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-32247?

How severe is CVE-2023-32247?

CVE-2023-32247 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.87% probability of exploitation in the next 30 days.

How do I fix CVE-2023-32247?

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-2023-32247?

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

Scan your code now

Source: NVD / NIST