CVE-2026-17508
Description
A flaw was found in Bouncy Castle. Several password-based key derivation functions (KDF) process cost parameters directly from untrusted input without enforcing upper bounds. An attacker can exploit this vulnerability by supplying crafted input containing excessively high cost parameters, forcing the system to allocate substantial CPU or memory resources before verifying cryptographic integrity. This excessive resource consumption can result in a Denial of Service (DoS).
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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