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CVSS Score
-| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| Microsoft.ChakraCore | nuget | < 1.11.2 | 1.11.2 |
The patch adds critical missing item checks (SparseArraySegment<int32>::IsMissingItem) in two key locations: 1) In JavascriptOperators.cpp's NativeIntArray handling, where type confusion could occur during JIT optimization by accepting values that resolve to memory corruption markers. 2) In JavascriptArray.cpp's DirectSetItemAt, where debug-only assertions were insufficient protection against invalid writes in release builds. Both locations directly correspond to the CWE-787 (out-of-bounds write) description and the commit's focus on fixing type confusion in JIT operations.