← WebKit — 2026-W39
653b77d5bdddf7d4ee348ab54a51afd582884b85 Re-enable wasm fast memory on Windows and stop committing the guard region
not a security fix
confidence 0.15
signal score 6.09
Source/JavaScriptCore/runtime
Classified as not security-relevant.
Triage note: Windows-only (#if OS(WINDOWS)) port of BufferMemory/WasmMemory to reserve-uncommitted-then-commit and a tryProtect NOACCESS state handler, re-enabling useWasmFastMemory on Windows; platform enablement of a previously-disabled feature, not a fix to a shipped vulnerability.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Triage note: Windows-only (#if OS(WINDOWS)) port of BufferMemory/WasmMemory to reserve-uncommitted-then-commit and a tryProtect NOACCESS state handler, re-enabling useWasmFastMemory on Windows; platform enablement of a previously-disabled feature, not a fix to a shipped vulnerability.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Structural signals: null_guard (+2.59), msg_soft (+1.0), area:Source/JavaScriptCore/runtime (+2.5)
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