CVE-2026-43343
Description
A flaw was found in the usb: gadget: f_subset module of the Linux kernel. The geth_free() function fails to decrement a reference count that was incremented by geth_alloc(). This unbalanced reference count can lead to a resource leak, preventing the configuration of attributes through the configfs interface after a function has been unlinked. This can result in a denial of service for specific USB gadget configurations.
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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