CVE-2026-64395
Description
A flaw was found in the Linux kernel's ksmbd component. This vulnerability allows an attacker with attribute access to a file to bypass security checks when duplicating file extents. By using the FSCTL_DUPLICATE_EXTENTS_TO_FILE function, an attacker can copy the contents of a source file to a destination that they can read, leading to information disclosure.
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
