CVE-2026-88359
Description
A flaw was found in libfyaml. When processing a specially crafted YAML document, a remote attacker can trigger a stack exhaustion vulnerability in the fy_atom_iter_format() function. This occurs because the function repeatedly allocates memory on the stack without releasing it, leading to cumulative stack growth. This can cause the process to crash, resulting in a denial of service.
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); Reduce Performance
This issue can make the product perform more slowly. If an attacker can influence the number of iterations in the loop, then this performance problem might allow a denial of service by consuming more platform resources than intended.
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