CVE-2026-43181
Description
A flaw was found in the Linux kernel's GPIO (General Purpose Input/Output) and sysfs subsystems. When a GPIO is exported through sysfs and its parent controller is removed, the system fails to properly unexport the GPIO attribute. This oversight prevents the final reference to the GPIO descriptor from being dropped, leading to a resource leak. Repeated exploitation of this flaw could result in resource exhaustion, potentially causing a Denial of Service (DoS) condition.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (Other); DoS: Resource Consumption (Memory); DoS: Resource Consumption (CPU)
An attacker that can influence the allocation of resources that are not properly released could deplete the available resource pool and prevent all other processes from accessing the same type of resource. Frequently-affected resources include memory, CPU, disk space, power or battery, etc.
Frequently Asked Questions
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