CVE-2026-46100
Description
A flaw was found in the Linux kernel's AFS (Andrew File System) component. The mmap_prepare() function was incorrectly used, leading to a reference count (refcount) leak. This issue occurs when mmap_prepare() establishes a refcount, but a subsequent operation fails, causing the refcount to be leaked. This resource leak could potentially lead to system instability or Denial of Service (DoS) over time.
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.
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