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ALAS2-2023-2021 --- libxml2
A NULL pointer dereference exists when parsing XML schemas in libxml2 xmlSchemaCheckCOSSTDerivedOK libxml2 Hashing of empty dict strings isn't deterministic. When hashing empty strings which aren't null-terminated, xmlDictComputeFastKey could produce inconsistent results. This could lead to various logic or memory errors, including double frees
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