← WebKit — 2026-W39
51ab3c3494d25b85e483cce7d6cf717e9cdcb5d3 Reduce OverlapMap clip computations in RenderLayerCompositor::addToOverlapMap()
not a security fix
confidence 0.1
signal score 8.82
Source/WebCore/rendering
Classified as not security-relevant.
Triage note: Adds isCoveredByRecentRects() to skip adding a layer already covered by recent rects in the compositing overlap map; a performance optimization, not a security fix.
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: Adds isCoveredByRecentRects() to skip adding a layer already covered by recent rects in the compositing overlap map; a performance optimization, not a security fix.
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: bounds_guard (+4.32), null_guard (+1.2), area:Source/WebCore/rendering (+2.0), surgical (+1.3)
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