CVE-2026-64016
Description
A flaw was found in the Linux kernel's ksmbd component, which handles file sharing. When a durable network connection is re-established, an error in managing the lifetime of file objects can occur. This can lead to a situation where a file object is released from memory while still being referenced, creating a use-after-free vulnerability. An attacker could potentially exploit this to cause the system to crash (denial of service) or, in more severe cases, execute unauthorized code.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the expired pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
Frequently Asked Questions
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