CVE-2026-64108
Description
A flaw was found in the Linux kernel's Common Internet File System (CIFS) component. This vulnerability occurs when a CIFS file's close operation is executed after the filesystem has been unmounted, leading to a directory entry (dentry) remaining in use. This improper resource management can trigger a system warning and potentially lead to system instability or a denial of service (DoS) condition, where legitimate users may be unable to access system resources.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
An adversary that can cause a resource counter to become inaccurate may be able to create situations where resources are not accounted for and not released, thus causing resources to become scarce for future needs.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An adversary that can cause a resource counter to become inaccurate may be able to force an error that causes the product to crash or exit out of its current operation.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
