CVE-2026-31391
Description
A flaw was found in the Linux kernel's atmel-sha204a component. This issue arises when the system attempts to allocate memory, and that allocation fails. If not properly handled, a resource counter, tfm_count, is not correctly decremented, leading to a resource leak. This can be exploited by a local user or process to prevent future read operations, effectively causing a Denial of Service (DoS) by making the system unresponsive to certain requests.
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.
