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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-64392 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: use opener credentials for delete-on-close Delete-on-close can be completed by deferred or durable handle teardown, where no request work is available. Both the base-file unlink and the ADS xattr removal consequently run with the ksmbd worker credentials and can bypass filesystem permission checks. Run both operations with the credentials captured in struct file when the handle was opened. This preserves the authenticated user's fsuid, fsgid, supplementary groups and capability restrictions at final close.


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/18c59109bb6fb816d5102171666f87cf1e29901d kernel.org
https://git.kernel.org/stable/c/4b7059974549d278e30fe70e2a4e421f9839817d kernel.org
https://git.kernel.org/stable/c/52e2f21911158ec961cd5aae19c56460db382af0 kernel.org
https://git.kernel.org/stable/c/e72c15085b6d86f45d224d98aa75b5cace4aaab9 kernel.org
https://git.kernel.org/stable/c/f08b3f451f12eee4abd8a5981803bc36db84458b kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-64392
NVD Published Date:
07/25/2026
NVD Last Modified:
07/25/2026
Source:
kernel.org