Red Hat: CVE-2025-59375: expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing (Multiple Advisories)

A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input (~250 KiB) can cause the parser to allocate hundreds of megabytes, leading to denial-of-service (DoS) through memory exhaustion.