CVE-2023-54260
Unknown Unknown - Not Provided
Use-After-Free in Linux CIFS Causes SMB Connection Info Leak

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix lost destroy smbd connection when MR allocate failed If the MR allocate failed, the smb direct connection info is NULL, then smbd_destroy() will directly return, then the connection info will be leaked. Let's set the smb direct connection info to the server before call smbd_destroy().
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2023-54260
EUVD
EUVD-2023-60381
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel's CIFS component occurs when the MR (Memory Region) allocation fails. In such a case, the SMB direct connection information becomes NULL, causing the smbd_destroy() function to return immediately without properly destroying the connection. This results in a leak of the connection information.

Impact Analysis

The vulnerability can lead to a leak of SMB direct connection information, which may expose sensitive connection details or cause resource leaks in the system, potentially affecting system stability or security.

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