The provided vulnerability information describes an out-of-bounds write in ChakraCore but does not include specific code references, commit diffs, or patch details. While the CWE-787 classification indicates a memory corruption pattern, the advisory and NVD entries lack technical details about implementation flaws in specific functions. Microsoft's security guidance and GitHub Advisory Database entries are similarly non-specific. Without concrete evidence of vulnerable function names/paths from source code analysis or patch comparisons, we cannot confidently identify exact vulnerable functions. Memory corruption in JavaScript engines often involves JIT compiler operations or array/buffer handling, but these are broad categories rather than specific functions.