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Vulnerability record · CVE-2023-32254 · published 10 July 2023

CVE-2023-32254: Linux kernel race condition vulnerability

Linux · Linux Kernel

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

8.1 CVSS 3.1 High EPSS 2.9% · top 13.5% CWE-362 · Race condition
8.1CVSS 3.1 base score
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

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

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2023-32254 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2191658 Issue TrackingPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20230824-0004/ Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-702/ PatchThird Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/CVE-2023-32254 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2191658 Issue TrackingPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20230824-0004/ Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-702/ PatchThird Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2023-32254), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.