raptorxmlwriterstartelementcommon in raptorxmlwriter.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to heap-based buffer overflows (sometimes seen in raptorqnameformatas_xml).
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-45321.json"