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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-64393 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: run set info with opener credentials SMB2 SET_INFO handlers call path-based VFS helpers after checking the access mask granted to the SMB handle. Those helpers perform their owner, inode permission and LSM checks using the current ksmbd worker credentials. Run the complete SET_INFO dispatch with the credentials captured when the handle was opened. This also removes the separate security information credential setup and keeps all SET_INFO classes under one credential scope. Direct override_creds() is used because it can nest with the request credential overrides already used by rename and link helpers.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0ce682867fd506f61f40c76bde7e4205bde34e87 kernel.org
https://git.kernel.org/stable/c/20ee516a62989a8d505ee432f9e59525ea23984e kernel.org
https://git.kernel.org/stable/c/5cbabf3a71575cd31bc7785d92d4ab42338a654b kernel.org
https://git.kernel.org/stable/c/8cc9ec711f5255167247a9ab6a7179b787426ed7 kernel.org
https://git.kernel.org/stable/c/b35afd5cf8fab236ef21117e42ee45691d4ffa7b kernel.org
https://git.kernel.org/stable/c/b383bcad3d2fe634b26efbce53e22bbb5753a520 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-64393
NVD Published Date:
07/25/2026
NVD Last Modified:
07/25/2026
Source:
kernel.org